4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Signal isolator

Kiyoshi Kumata

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Digital display type electronic time piece

Patent

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Electronic timepiece with melody alarm faculties

Horology: time measuring systems or devices – Chronological – With simultaneous time indicating means
Patent

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Electronic timepiece with message and/or alarm output capability

Horology: time measuring systems or devices – Chronological – With electro-optical display
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Electronic timepiece with negative resistance light emitting ele

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Electronic timepiece with variable melody alarm faculties

Horology: time measuring systems or devices – Signalling means – Musical
Patent

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Profile ID: LFUS-PAI-P-56850

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