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Electric strike
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Patent number 4,211,443
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Issue date Jul 8, 1980
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Folger Adam Co., Division of Telkee, Inc.
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Lawrence D. Butts
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Electric hinge
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Patent number 4,140,357
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Issue date Feb 20, 1979
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Folger Adam Co., Division of Telkee, Inc.
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Francis T. Wolz
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Lock knob control mechanism
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Patent number 3,999,411
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Issue date Dec 28, 1976
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Folger Adam Co., Division of Telkee, Inc.
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Raymond V. Kambic
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES