4. Dynamic magnetic information storage or retrieval
  5. Automatic control of a recorder mechanism

Peter S. Hahn

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Compact polyphase optical position encoder

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

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Removable and transportable hard disk subsystem

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism
Patent

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Removable and transportable hard disk subsystem

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent

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Removable and transportable hard disk subsystem

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism
Patent

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Profile ID: LFUS-PAI-P-1172071

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