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

Calven Kuo

Inventor

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Answer bar of a calculator

Registers – Keyboards – With total transfer to keyboard or the like
Patent

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Calculator

Printing and office machinery – Typewriter or calculator – Calculator
Patent

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Calculator

Printing and office machinery – Typewriter or calculator – Calculator
Patent

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Calculator housing

Registers – Miscellaneous – Numeral wheels
Patent

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Calculator or similar article

Printing and office machinery – Typewriter or calculator – Calculator
Patent

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Profile ID: LFUS-PAI-P-1361914

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