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Disc music box
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Patent number 5,962,796
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Issue date Oct 5, 1999
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Rhythm Watch Co., Ltd.
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Norihiko Nakamura
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Music box timepiece
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Patent number 5,864,519
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Issue date Jan 26, 1999
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Rhythm Watch Co., Ltd.
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Norihiko Nakamura
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Timepiece movement
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Patent number 4,912,690
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Issue date Mar 27, 1990
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Rhythm Watch Co., Ltd.
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Norihiko Nakamura
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G04 - HOROLOGY
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-
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Double pendulum clock
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Patent number 4,613,236
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Issue date Sep 23, 1986
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Rhythm Watch Co., Ltd.
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Norihiko Nakamura
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G04 - HOROLOGY
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Whole body swingable clock
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Patent number 4,600,315
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Issue date Jul 15, 1986
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Rhythm Watch Co., Ltd.
-
Norihiko Nakamura
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G04 - HOROLOGY
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Whole body swingable clock
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Patent number 4,468,132
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Issue date Aug 28, 1984
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Rhythm Watch Co., Ltd.
-
Norihiko Nakamura
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G04 - HOROLOGY
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