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Counterbalance support
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Patent number 4,312,097
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Issue date Jan 26, 1982
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Weber-Knapp Company
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Kenneth J. Boyd
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2924843
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Patent number 2,924,843
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Issue date Feb 16, 1960
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1912289
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Patent number 1,912,289
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Issue date May 30, 1933
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1332881
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Patent number 1,332,881
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Issue date Mar 9, 1920
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1241081
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Patent number 1,241,081
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Issue date Sep 25, 1917
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1241085
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Patent number 1,241,085
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Issue date Sep 25, 1917
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1226179
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Patent number 1,226,179
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Issue date May 15, 1917
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1131667
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Patent number 1,131,667
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Issue date Mar 16, 1915
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1107076
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Patent number 1,107,076
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Issue date Aug 11, 1914
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1062217
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Patent number 1,062,217
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Issue date May 20, 1913
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1032144
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Patent number 1,032,144
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Issue date Jul 9, 1912
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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981053
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Patent number 981,053
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Issue date Jan 10, 1911
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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980230
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Patent number 980,230
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Issue date Jan 3, 1911
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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965967
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Patent number 965,967
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Issue date Aug 2, 1910
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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962330
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Patent number 962,330
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Issue date Jun 21, 1910
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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941239
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Patent number 941,239
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Issue date Nov 23, 1909
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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862014
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Patent number 862,014
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Issue date Jul 30, 1907
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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746054
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Patent number 746,054
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Issue date Dec 8, 1903
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES