4. Communications: electrical
  5. Continuously variable indicating
  6. With supply voltage regulation or compensation

Perry H. Goodwin, Jr.

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Adjustable ultrasonic level measurement device

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent

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Two-wire isolated signal transmitter

Communications: electrical – Continuously variable indicating – With supply voltage regulation or compensation
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Profile ID: LFUS-PAI-P-1332174

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