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                        Drafting tool
                                - 
                                    Patent number 7,490,412
                                
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                                    Issue date Feb 17, 2009
                                
 
                                - 
                                         Jennifer L.  Gupta Jennifer L.  Gupta
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        Multipurpose drawing tool
                                - 
                                    Patent number 7,383,635
                                
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                                    Issue date Jun 10, 2008
                                
 
                                - 
                                         Learning Resources, Inc. Learning Resources, Inc.
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                                         J. Bruce  Stoneberg J. Bruce  Stoneberg
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        Tracing tool
                                - 
                                    Patent number 5,862,601
                                
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                                    Issue date Jan 26, 1999
                                
 
                                - 
                                         James L. O'Brien James L. O'Brien
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        Speed layout stick
                                - 
                                    Patent number 5,509,207
                                
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                                    Issue date Apr 23, 1996
                                
 
                                - 
                                         Dale N. Harms Dale N. Harms
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        Template guide
                                - 
                                    Patent number 4,388,764
                                
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                                    Issue date Jun 21, 1983
                                
 
                                - 
                                         Glenn P. Hermes Glenn P. Hermes
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        Drafting aid
                                - 
                                    Patent number 4,355,472
                                
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                                    Issue date Oct 26, 1982
                                
 
                                - 
                                         Richard  Wedge Richard  Wedge
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        Measuring apparatus
                                - 
                                    Patent number 4,069,560
                                
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                                    Issue date Jan 24, 1978
                                
 
                                - 
                                         Richard K. Roedel Richard K. Roedel
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        Measuring apparatus
                                - 
                                    Patent number 3,975,827
                                
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                                    Issue date Aug 24, 1976
                                
 
                                - 
                                         Richard K. Roedel Richard K. Roedel
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        3726017
                                - 
                                    Patent number 3,726,017
                                
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                                    Issue date Apr 10, 1973
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        3624911
                                - 
                                    Patent number 3,624,911
                                
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                                    Issue date Dec 7, 1971
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        3327360
                                - 
                                    Patent number 3,327,360
                                
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                                    Issue date Jun 27, 1967
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        3160957
                                - 
                                    Patent number 3,160,957
                                
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                                    Issue date Dec 15, 1964
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        3087250
                                - 
                                    Patent number 3,087,250
                                
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                                    Issue date Apr 30, 1963
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        2974416
                                - 
                                    Patent number 2,974,416
                                
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                                    Issue date Mar 14, 1961
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        2899861
                                - 
                                    Patent number 2,899,861
                                
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                                    Issue date Aug 18, 1959
                                
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        2805484
                                - 
                                    Patent number 2,805,484
                                
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                                    Issue date Sep 10, 1957
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        2746157
                                - 
                                    Patent number 2,746,157
                                
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                                    Issue date May 22, 1956
                                
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        2502039
                                - 
                                    Patent number 2,502,039
                                
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                                    Issue date Mar 28, 1950
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        2423779
                                - 
                                    Patent number 2,423,779
                                
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                                    Issue date Jul 8, 1947
                                
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        2272146
                                - 
                                    Patent number 2,272,146
                                
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                                    Issue date Feb 3, 1942
                                
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        1877375
                                - 
                                    Patent number 1,877,375
                                
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                                    Issue date Sep 13, 1932
                                
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        1877341
                                - 
                                    Patent number 1,877,341
                                
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                                    Issue date Sep 13, 1932
                                
 
                                - 
                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        1624280
                                - 
                                    Patent number 1,624,280
                                
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                                    Issue date Apr 12, 1927
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
 
 
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                        1396806
                                - 
                                    Patent number 1,396,806
                                
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                                    Issue date Nov 15, 1921
                                
 
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                                         B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES