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Electronic timepiece
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Patent number 4,275,462
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Issue date Jun 23, 1981
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Ebauches S.A.
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Jean Schaad
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H01 - BASIC ELECTRIC ELEMENTS
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Oscillator
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Patent number 4,101,848
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Issue date Jul 18, 1978
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Kabushiki Kaisha Daini Seikosha
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Shiro Yamashita
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H03 - BASIC ELECTRONIC CIRCUITRY
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Variable capacitor
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Patent number 4,068,285
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Issue date Jan 10, 1978
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Kabushiki Kaisha Suwa Seikosha
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Kuniharu Yamada
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H01 - BASIC ELECTRIC ELEMENTS
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3903459
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Patent number 3,903,459
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Issue date Sep 2, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3808556
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Patent number 3,808,556
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Issue date Apr 30, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3778998
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Patent number 3,778,998
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Issue date Dec 18, 1973
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G04 - HOROLOGY
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3754152
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Patent number 3,754,152
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Issue date Aug 21, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3749986
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Patent number 3,749,986
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Issue date Jul 31, 1973
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G04 - HOROLOGY
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3737805
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Patent number 3,737,805
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Issue date Jun 5, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3728641
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Patent number 3,728,641
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Issue date Apr 17, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3681664
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Patent number 3,681,664
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Issue date Aug 1, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3659165
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Patent number 3,659,165
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Issue date Apr 25, 1972
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G04 - HOROLOGY
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3270296
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Patent number 3,270,296
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Issue date Aug 30, 1966
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H03 - BASIC ELECTRONIC CIRCUITRY