4. Printing and office machinery
  5. Typewriter or calculator
  6. Calculator

Masumi Ishiwatari

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Booster circuit

Electric power conversion systems – Current conversion – With voltage multiplication means
Patent

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Communication apparatus used with a card-like device

Facsimile and static presentation processing – Facsimile – Auxiliary signal
Patent

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Desk top electronic calculator

Printing and office machinery – Typewriter or calculator – Calculator
Patent

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Determining the accessibility of a portable storage device...

Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate

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Inhibiting access to a portable storage device

Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate

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Profile ID: LFUS-PAI-P-303785

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