4. Horology: time measuring systems or devices
  5. Crown or stem details
  6. Switch or detent

Hisao Yamagata

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Buckle for watch bands

Buckles – buttons – clasps – etc. – Strap tighteners – Accordion straps
Patent

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Electronic calculator watch

Horology: time measuring systems or devices – Combined with disparate device
Patent

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Protocol conversion system

Multiplex communications – Wide area network – Packet switching
Patent

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Switch mechanism for wristwatch

Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent

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Timepiece push-button structure

Horology: time measuring systems or devices – Crown or stem details – Switch or detent
Patent

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Profile ID: LFUS-PAI-P-814271

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