4. Communications: electrical
  5. Audible indication
  6. Percussion-type sound producer

Kazuhiro Arakawa

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Desk-top electronic calculator

Printing and office machinery – Typewriter or calculator – Calculator
Patent

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Key input device

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

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Liquid crystal display keyboard

Patent

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Sample observing apparatus and sample observing method

Radiant energy – Inspection of solids or liquids by charged particles – Electron probe type
Reexamination Certificate

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Profile ID: LFUS-PAI-P-233130

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