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Time delay switch
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Patent number 5,473,204
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Issue date Dec 5, 1995
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Thomas D. Temple
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H03 - BASIC ELECTRONIC CIRCUITRY
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Timer apparatus
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Patent number 4,525,609
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Issue date Jun 25, 1985
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Matsushita Electric Co., Ltd.
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Akio Matsumoto
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H01 - BASIC ELECTRIC ELEMENTS
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Timed switch
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Patent number 4,414,439
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Issue date Nov 8, 1983
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Timex Corporation
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Edward V. Pomponio
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H01 - BASIC ELECTRIC ELEMENTS
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Switch inhibitor for timers
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Patent number 4,355,217
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Issue date Oct 19, 1982
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General Electric Company
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Donald S. Cushing
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H01 - BASIC ELECTRIC ELEMENTS
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-
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Programmable timer
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Patent number 4,171,471
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Issue date Oct 16, 1979
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Timex Corporation
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Robert L. Boyles
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H01 - BASIC ELECTRIC ELEMENTS
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Automatic timer switch
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Patent number 3,997,742
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Issue date Dec 14, 1976
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Robertshaw Controls Company
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Edgar E. Marquis
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H01 - BASIC ELECTRIC ELEMENTS
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3812306
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Patent number 3,812,306
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Issue date May 21, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3584166
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Patent number 3,584,166
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Issue date Jun 8, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3478181
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Patent number 3,478,181
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Issue date Nov 11, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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2073319
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Patent number 2,073,319
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Issue date Mar 9, 1937
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H01 - BASIC ELECTRIC ELEMENTS