4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Kok Hing Fo

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Encoder utilizing a reflective cylindrical surface

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate

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Input device

Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad
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Optical encoder

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate

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Optical encoder

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate

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Optical encoder device

Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2651265

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