4. Dynamic magnetic information storage or retrieval
  5. Record transport with head stationary during transducing
  6. Drum record

Hans Grapenthin

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DC-DC boost converter for spindle motor control

Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
Patent

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Positioning device for positioning a read/write head of a disc s

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
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Profile ID: LFUS-PAI-P-1002419

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