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

Noel L. Allen

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Combined stepper motor and voice coil head positioning apparatus

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent

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Composite spring mount shock absorber

Spring devices – Coil – Including end thrust member
Reexamination Certificate

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Energy dissipation system

Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1264989

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