4. Dynamic magnetic information storage or retrieval
  5. Automatic control of a recorder mechanism
  6. Controlling the record

Donald A. Evert

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Angular position sensor

Measuring and testing – Vibration – By mechanical waves
Patent

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Dual reel hub

Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent

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Purging and expansion mechanism

Communications – electrical: acoustic wave systems and devices – Signal transducers
Patent

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Slack tape loader

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

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Profile ID: LFUS-PAI-P-38867

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