4. Communications, electrical: acoustic wave systems and devices
  5. Echo systems
  6. Returned signal used for control

Allen J. Siefken

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Noninvasive ultrasonic proximity detector for a fluid actuated c

Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent

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Noninvasive ultrasonic proximity detector for a fluid actuated c

Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent

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Switch protection circuit

Electricity: electrical systems and devices – Safety and protection of systems and devices – Arc suppression at switching point
Patent

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Profile ID: LFUS-PAI-P-830681

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