4. Dynamic information storage or retrieval
  5. Specific detail of information handling portion of system
  6. Radiation beam modification of or by storage medium

Masamichi Utsumi

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Hologram formed on an objective lens for one defracting light be

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

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Method and apparatus for playing back multilayer disk

Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium
Patent

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Method and device for identifying disc

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent

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Optical pickup for discriminating between and reading...

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Optical pickup for discriminating between and reading...

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1154452

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