4. Communications, electrical: acoustic wave systems and devices
  5. Seismic prospecting
  6. Land-reflection type

Toshimasa Kamisada

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Apparatus and method for detecting focus error signal and tracki

Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent

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Focus error detection apparatus utilizing focusing an front and

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Information recording apparatus, information recording...

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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Laser module and optical 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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Magneto-optic disk apparatus having means for eliminating fluctu

Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent

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Profile ID: LFUS-PAI-P-239429

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