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

Clement Cheng, Esq.

Attorney

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Attorney

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Calculator

Printing and office machinery – Typewriter or calculator – Calculator
Design Patent

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Calculator

Printing and office machinery – Typewriter or calculator – Calculator
Design Patent

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Lighted backpack

Illumination – With wearing apparel or body support – Shoulder suspension or torso encircling
Reexamination Certificate

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Lighted trampoline

Exercise devices – Gymnastic – Projector
Reexamination Certificate

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Linear led array

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate

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