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

David Ernest Call

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Laser power-drive circuit having a scaling DAC supplying a scale

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 for testing the acceptability of a magnetic read sensor

Electricity: measuring and testing – Magnetic – Magnetic information storage element testing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1876739

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