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Time delay switch
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Patent number 4,371,791
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Issue date Feb 1, 1983
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BBC Brown, Boveri & Company, Limited
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Olivier Mercier
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H01 - BASIC ELECTRIC ELEMENTS
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3505642
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Patent number 3,505,642
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Issue date Apr 7, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3424865
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Patent number 3,424,865
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Issue date Jan 28, 1969
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H03 - BASIC ELECTRONIC CIRCUITRY
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3256411
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Patent number 3,256,411
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Issue date Jun 14, 1966
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H01 - BASIC ELECTRIC ELEMENTS
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3256410
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Patent number 3,256,410
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Issue date Jun 14, 1966
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H01 - BASIC ELECTRIC ELEMENTS
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3038049
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Patent number 3,038,049
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Issue date Jun 5, 1962
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G05 - CONTROLLING REGULATING
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2613253
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Patent number 2,613,253
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Issue date Oct 7, 1952
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H01 - BASIC ELECTRIC ELEMENTS
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2605696
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Patent number 2,605,696
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Issue date Aug 5, 1952
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2564868
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Patent number 2,564,868
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Issue date Aug 21, 1951
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H01 - BASIC ELECTRIC ELEMENTS
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2564322
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Patent number 2,564,322
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Issue date Aug 14, 1951
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H01 - BASIC ELECTRIC ELEMENTS
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2253815
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Patent number 2,253,815
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Issue date Aug 26, 1941
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H01 - BASIC ELECTRIC ELEMENTS
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1888145
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Patent number 1,888,145
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Issue date Nov 15, 1932
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H01 - BASIC ELECTRIC ELEMENTS
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1615163
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Patent number 1,615,163
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H01 - BASIC ELECTRIC ELEMENTS
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1491396
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Patent number 1,491,396
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Issue date Apr 22, 1924
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H01 - BASIC ELECTRIC ELEMENTS
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1355847
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Patent number 1,355,847
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Issue date Oct 19, 1920
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H01 - BASIC ELECTRIC ELEMENTS