4. Measuring and testing
  5. Vibration
  6. Vibrator

John Jay Freeman

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Disc drive servo track writer gas leak detector and method

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

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Method and apparatus for subjecting a device to rotational...

Measuring and testing – Vibration – Vibrator
Reexamination Certificate

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Self-synchronizing AC synchronous driver for DC brushless...

Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2127520

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