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                        3471887
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                                    Patent number 3,471,887
                                
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                                    Issue date Oct 14, 1969
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        3104407
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                                    Patent number 3,104,407
                                
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                                    Issue date Sep 24, 1963
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2746465
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                                    Patent number 2,746,465
                                
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                                    Issue date May 22, 1956
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2725064
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                                    Patent number 2,725,064
                                
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                                    Issue date Nov 29, 1955
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2702557
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                                    Patent number 2,702,557
                                
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                                    Issue date Feb 22, 1955
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2696625
                                - 
                                    Patent number 2,696,625
                                
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                                    Issue date Dec 14, 1954
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2671921
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                                    Patent number 2,671,921
                                
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                                    Issue date Mar 16, 1954
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2621667
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                                    Patent number 2,621,667
                                
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                                    Issue date Dec 16, 1952
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2432584
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                                    Patent number 2,432,584
                                
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                                    Issue date Dec 16, 1947
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2424049
                                - 
                                    Patent number 2,424,049
                                
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                                    Issue date Jul 15, 1947
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2416759
                                - 
                                    Patent number 2,416,759
                                
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                                    Issue date Mar 4, 1947
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2369358
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                                    Patent number 2,369,358
                                
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                                    Issue date Feb 13, 1945
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2364971
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                                    Patent number 2,364,971
                                
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                                    Issue date Dec 12, 1944
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2228684
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                                    Patent number 2,228,684
                                
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                                    Issue date Jan 14, 1941
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2201634
                                - 
                                    Patent number 2,201,634
                                
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                                    Issue date May 21, 1940
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2190165
                                - 
                                    Patent number 2,190,165
                                
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                                    Issue date Feb 13, 1940
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2189176
                                - 
                                    Patent number 2,189,176
                                
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                                    Issue date Feb 6, 1940
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2161613
                                - 
                                    Patent number 2,161,613
                                
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                                    Issue date Jun 6, 1939
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2119306
                                - 
                                    Patent number 2,119,306
                                
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                                    Issue date May 31, 1938
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2090572
                                - 
                                    Patent number 2,090,572
                                
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                                    Issue date Aug 17, 1937
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2065466
                                - 
                                    Patent number 2,065,466
                                
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                                    Issue date Dec 22, 1936
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2057152
                                - 
                                    Patent number 2,057,152
                                
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                                    Issue date Oct 13, 1936
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2035368
                                - 
                                    Patent number 2,035,368
                                
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                                    Issue date Mar 24, 1936
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        2006085
                                - 
                                    Patent number 2,006,085
                                
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                                    Issue date Jun 25, 1935
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        1956063
                                - 
                                    Patent number 1,956,063
                                
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                                    Issue date Apr 24, 1934
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        1943602
                                - 
                                    Patent number 1,943,602
                                
- 
                                    Issue date Jan 16, 1934
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        1925353
                                - 
                                    Patent number 1,925,353
                                
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                                    Issue date Sep 5, 1933
                                
 
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                                         B08 - CLEANING B08 - CLEANING
 
 
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                        1851002
                                - 
                                    Patent number 1,851,002
                                
- 
                                    Issue date Mar 29, 1932
                                
 
                                - 
                                         B08 - CLEANING B08 - CLEANING