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                        3527786
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                        3527784
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                                    Patent number 3,527,784
                                
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                                    Issue date Sep 8, 1970
                                
 
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                        3496210
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                                    Patent number 3,496,210
                                
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                                    Issue date Feb 17, 1970
                                
 
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                        3480660
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                                    Patent number 3,480,660
                                
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                                    Issue date Nov 25, 1969
                                
 
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                        3419597
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                                    Patent number 3,419,597
                                
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                                    Issue date Dec 31, 1968
                                
 
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                        3414605
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                                    Patent number 3,414,605
                                
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                                    Issue date Dec 3, 1968
                                
 
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                        3376211
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                                    Patent number 3,376,211
                                
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                                    Issue date Apr 2, 1968
                                
 
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                        3300527
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                                    Patent number 3,300,527
                                
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                                    Issue date Jan 24, 1967
                                
 
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                        3281451
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                                    Patent number 3,281,451
                                
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                                    Issue date Oct 25, 1966
                                
 
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                        3267129
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                                    Patent number 3,267,129
                                
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                                    Issue date Aug 16, 1966
                                
 
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                        3255234
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                                    Patent number 3,255,234
                                
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                                    Issue date Jun 7, 1966
                                
 
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                        3189642
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                                    Patent number 3,189,642
                                
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                                    Issue date Jun 15, 1965
                                
 
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                        3186953
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                                    Patent number 3,186,953
                                
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                                    Issue date Jun 1, 1965
                                
 
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                                    Patent number 3,114,764
                                
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                        3079424
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                                    Patent number 3,079,424
                                
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                                    Issue date Feb 26, 1963
                                
 
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                        3053881
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                                    Patent number 3,053,881
                                
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                        2999072
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                        2998443
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                                    Patent number 2,998,443
                                
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                                    Issue date Aug 29, 1961
                                
 
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                        2956029
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                                    Patent number 2,956,029
                                
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                                    Issue date Oct 11, 1960
                                
 
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                        2920098
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                                    Patent number 2,920,098
                                
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                                    Issue date Jan 5, 1960
                                
 
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                        2854473
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                                    Patent number 2,854,473
                                
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                                    Issue date Sep 30, 1958
                                
 
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                        2851478
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                                    Patent number 2,851,478
                                
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                                    Issue date Sep 9, 1958
                                
 
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                        2847449
                                - 
                                    Patent number 2,847,449
                                
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                                    Issue date Aug 12, 1958
                                
 
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                        2847446
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                                    Patent number 2,847,446
                                
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                                    Issue date Aug 12, 1958
                                
 
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                        2847447
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                                    Patent number 2,847,447
                                
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                                    Issue date Aug 12, 1958
                                
 
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                        2847450
                                - 
                                    Patent number 2,847,450
                                
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                                    Issue date Aug 12, 1958
                                
 
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                        2847448
                                - 
                                    Patent number 2,847,448
                                
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                                    Issue date Aug 12, 1958
                                
 
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                        2840592
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                                    Patent number 2,840,592
                                
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                                    Issue date Jun 24, 1958
                                
 
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                        2839473
                                - 
                                    Patent number 2,839,473
                                
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                                    Issue date Jun 17, 1958
                                
 
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