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Alarm wristwatch
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Patent number 4,216,650
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Issue date Aug 12, 1980
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Kabushiki Kaisha Daini Seikosha
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Yoshiaki Hara
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G04 - HOROLOGY
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3838563
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Patent number 3,838,563
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Issue date Oct 1, 1974
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G04 - HOROLOGY
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3732686
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Patent number 3,732,686
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Issue date May 15, 1973
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G04 - HOROLOGY
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3621647
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Patent number 3,621,647
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Issue date Nov 23, 1971
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G04 - HOROLOGY
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3462943
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Patent number 3,462,943
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Issue date Aug 26, 1969
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G04 - HOROLOGY
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3086352
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Patent number 3,086,352
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Issue date Apr 23, 1963
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G04 - HOROLOGY
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3079749
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Patent number 3,079,749
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Issue date Mar 5, 1963
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G04 - HOROLOGY
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2958996
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Patent number 2,958,996
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Issue date Nov 8, 1960
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G04 - HOROLOGY
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2948106
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Patent number 2,948,106
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Issue date Aug 9, 1960
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G04 - HOROLOGY
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2929197
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Patent number 2,929,197
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Issue date Mar 22, 1960
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G04 - HOROLOGY