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Slotted locking device
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Patent number 3,968,665
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Issue date Jul 13, 1976
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Edward A. Kaufmann
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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3788108
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Patent number 3,788,108
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Issue date Jan 29, 1974
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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3710605
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Patent number 3,710,605
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Issue date Jan 16, 1973
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2686648
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Patent number 2,686,648
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Issue date Aug 17, 1954
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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2669858
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Patent number 2,669,858
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Issue date Feb 23, 1954
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B61 - RAILWAYS
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2159895
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Patent number 2,159,895
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Issue date May 23, 1939
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1998570
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Patent number 1,998,570
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Issue date Apr 23, 1935
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B61 - RAILWAYS
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1908097
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Patent number 1,908,097
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Issue date May 9, 1933
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B61 - RAILWAYS
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1878886
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Patent number 1,878,886
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Issue date Sep 20, 1932
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1877788
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Patent number 1,877,788
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Issue date Sep 20, 1932
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B61 - RAILWAYS
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1852390
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Patent number 1,852,390
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Issue date Apr 5, 1932
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B61 - RAILWAYS
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1797623
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Patent number 1,797,623
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Issue date Mar 24, 1931
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B61 - RAILWAYS
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1786582
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Patent number 1,786,582
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Issue date Dec 30, 1930
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B61 - RAILWAYS
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1771183
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Patent number 1,771,183
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Issue date Jul 22, 1930
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B61 - RAILWAYS
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1739868
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Patent number 1,739,868
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Issue date Dec 17, 1929
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B61 - RAILWAYS
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1619881
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Patent number 1,619,881
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B61 - RAILWAYS
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1565679
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Patent number 1,565,679
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Issue date Dec 15, 1925
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H01 - BASIC ELECTRIC ELEMENTS
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1558115
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Patent number 1,558,115
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Issue date Oct 20, 1925
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B61 - RAILWAYS
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1491219
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Patent number 1,491,219
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B60 - VEHICLES IN GENERAL
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1440252
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Patent number 1,440,252
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Issue date Dec 26, 1922
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B61 - RAILWAYS
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1406790
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Patent number 1,406,790
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H01 - BASIC ELECTRIC ELEMENTS
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1399808
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Patent number 1,399,808
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Issue date Dec 13, 1921
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H01 - BASIC ELECTRIC ELEMENTS
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1396946
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Patent number 1,396,946
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Issue date Nov 15, 1921
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B61 - RAILWAYS
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1393246
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Patent number 1,393,246
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B61 - RAILWAYS
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1377335
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Patent number 1,377,335
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B60 - VEHICLES IN GENERAL
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1312977
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Patent number 1,312,977
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Issue date Aug 12, 1919
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B61 - RAILWAYS
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1298745
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Patent number 1,298,745
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B61 - RAILWAYS
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1287497
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Patent number 1,287,497
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Issue date Dec 10, 1918
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B61 - RAILWAYS