4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Photocell controlled circuit

Tzu-Ping Yang

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Bifocal optical pickup head

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate

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Bifocal optical pickup head

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate

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Dual-wavelength optical pickup head

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate

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Multiple-beam holographic optical pick-up head

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

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Optical recording and/or reproducing apparatus with...

Dynamic optical information storage or retrieval – Dynamic mechanism optical subsystem – Protecting optical transducer
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2065664

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