4. Dynamic information storage or retrieval
  5. Systems having plural physically distinct independent tracks...
  6. Having layered storage medium

Masahiko Tsukuda

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Electron beam exposure method and electron beam exposure...

Radiant energy – Irradiation of objects or material – Irradiation of semiconductor devices
Reexamination Certificate

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Electron beam recorder and method thereof

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Electrical modification or sensing of storage medium
Reexamination Certificate

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Exposure apparatus of an optical disk master, method of...

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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Exposure apparatus of an optical disk master, method of...

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

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Exposure apparatus of an optical disk master, method of...

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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Profile ID: LFUS-PAI-P-2314528

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