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                        3863783
                                - 
                                    Patent number 3,863,783
                                
- 
                                    Issue date Feb 4, 1975
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        3768784
                                - 
                                    Patent number 3,768,784
                                
- 
                                    Issue date Oct 30, 1973
                                
 
                                - 
                                         B60 - VEHICLES IN GENERAL B60 - VEHICLES IN GENERAL
 
 
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                        3684255
                                - 
                                    Patent number 3,684,255
                                
- 
                                    Issue date Aug 15, 1972
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        3633879
                                - 
                                    Patent number 3,633,879
                                
- 
                                    Issue date Jan 11, 1972
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        3610405
                                - 
                                    Patent number 3,610,405
                                
- 
                                    Issue date Oct 5, 1971
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        3521767
                                - 
                                    Patent number 3,521,767
                                
- 
                                    Issue date Jul 28, 1970
                                
 
                                - 
                                         B60 - VEHICLES IN GENERAL B60 - VEHICLES IN GENERAL
 
 
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                        3402805
                                - 
                                    Patent number 3,402,805
                                
- 
                                    Issue date Sep 24, 1968
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        3367636
                                - 
                                    Patent number 3,367,636
                                
- 
                                    Issue date Feb 6, 1968
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        1935922
                                - 
                                    Patent number 1,935,922
                                
- 
                                    Issue date Nov 21, 1933
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        1255750
                                - 
                                    Patent number 1,255,750
                                
- 
                                    Issue date Feb 5, 1918
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        1222605
                                - 
                                    Patent number 1,222,605
                                
- 
                                    Issue date Apr 17, 1917
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        952897
                                - 
                                    Patent number 952,897
                                
- 
                                    Issue date Mar 22, 1910
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        889606
                                - 
                                    Patent number 889,606
                                
- 
                                    Issue date Jun 2, 1908
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE
 
 
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                        821267
                                - 
                                    Patent number 821,267
                                
- 
                                    Issue date May 22, 1906
                                
 
                                - 
                                         B28 - WORKING CEMENT, CLAY, OR STONE B28 - WORKING CEMENT, CLAY, OR STONE