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

Chan Sik Leung

Inventor

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Inventor

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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 lid mechanism

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate

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Calculator with automatic slow motion deployment

Registers – Calculators – Input-output calculator to indicator – printer – etc.
Reexamination Certificate

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Compact disc carrier

Special receptacle or package – For holding a machine readable recording medium – For holding an optical disc
Patent

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Profile ID: LFUS-PAI-P-569045

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