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Security locking system
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Patent number 4,113,291
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Issue date Sep 12, 1978
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McGraw-Edison Company
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Gordon Cameron
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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3845527
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Patent number 3,845,527
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Issue date Nov 5, 1974
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B66 - HOISTING LIFTING HAULING
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3486797
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Patent number 3,486,797
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Issue date Dec 30, 1969
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B60 - VEHICLES IN GENERAL
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3451419
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Patent number 3,451,419
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Issue date Jun 24, 1969
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2642108
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Patent number 2,642,108
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Issue date Jun 16, 1953
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2634160
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Patent number 2,634,160
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Issue date Apr 7, 1953
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B60 - VEHICLES IN GENERAL
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2307747
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Patent number 2,307,747
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Issue date Jan 12, 1943
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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2051899
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Patent number 2,051,899
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Issue date Aug 25, 1936
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1858992
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Patent number 1,858,992
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Issue date May 17, 1932
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1470294
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Patent number 1,470,294
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Issue date Oct 9, 1923
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1427566
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Patent number 1,427,566
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1370216
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Patent number 1,370,216
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Issue date Mar 1, 1921
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1366817
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Patent number 1,366,817
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Issue date Jan 25, 1921
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1364077
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Patent number 1,364,077
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Issue date Jan 4, 1921
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1336733
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Patent number 1,336,733
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Issue date Apr 13, 1920
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1335901
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Patent number 1,335,901
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Issue date Apr 6, 1920
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1332268
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Patent number 1,332,268
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Issue date Mar 2, 1920
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1291250
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Patent number 1,291,250
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Issue date Jan 14, 1919
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1291070
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Patent number 1,291,070
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Issue date Jan 14, 1919
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1261616
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Patent number 1,261,616
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Issue date Apr 2, 1918
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1259177
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Patent number 1,259,177
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Issue date Mar 12, 1918
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1188447
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Patent number 1,188,447
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Issue date Jun 27, 1916
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1179319
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Patent number 1,179,319
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Issue date Apr 11, 1916
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1176791
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Patent number 1,176,791
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Issue date Mar 28, 1916
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1172580
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Patent number 1,172,580
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Issue date Feb 22, 1916
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1160389
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Patent number 1,160,389
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Issue date Nov 16, 1915
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1158163
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Patent number 1,158,163
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Issue date Oct 26, 1915
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1142018
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Patent number 1,142,018
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Issue date Jun 8, 1915
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1142607
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Patent number 1,142,607
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Issue date Jun 8, 1915
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1134792
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Patent number 1,134,792
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Issue date Apr 6, 1915
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...