4. Electricity: measuring and testing
  5. Electrical speed measuring
  6. Including speed analog electrical signal generator

Patrick L. Hearn

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Magnetic tachometer for disk drives

Electricity: measuring and testing – Electrical speed measuring – Including speed analog electrical signal generator
Patent

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Method of manufacture for a magnetic tachometer for disk drives

Metal working – Method of mechanical manufacture – Electrical device making
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Randomly laser-textured magnetic recording media

Dynamic magnetic information storage or retrieval – Record medium – Disk
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Profile ID: LFUS-PAI-P-600186

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