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Reduction gear for electronic timepiece
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Patent number 4,357,695
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Issue date Nov 2, 1982
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Ebauches Bettlach, S.A.
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Peter Bachmann
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3813952
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Patent number 3,813,952
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Issue date Jun 4, 1974
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3500630
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Patent number 3,500,630
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Issue date Mar 17, 1970
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2917933
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Patent number 2,917,933
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Issue date Dec 22, 1959
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G04 - HOROLOGY
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2869375
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Patent number 2,869,375
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Issue date Jan 20, 1959
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G05 - CONTROLLING REGULATING