4. Optics: eye examining, vision testing and correcting
  5. Eye examining or testing instrument
  6. Subjective type

Hisao Ishigaki

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Dial and movement fixing structure

Horology: time measuring systems or devices – Cases – With movement securing means
Patent

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Mounting structure of plastic glass in watch case

Horology: time measuring systems or devices – Cases – With bezel or crystal details
Patent

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Vision tester

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent

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Wristwatch case

Patent

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Profile ID: LFUS-PAI-P-442791

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