4. Measuring and testing
  5. Volume or rate of flow
  6. System

Niels Thun

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Apparatus for ultrasonic measurement

Measuring and testing – Vibration – By mechanical waves
Patent

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Electrical shock prevention means for high voltage DC regulators

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent

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Method and apparatus for charging lead-acid-accumulators

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent

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Method and apparatus for the ultrasonic measurement of the flow

Measuring and testing – Volume or rate of flow – System
Patent

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Multiplex circuit

Telegraphy – Systems – Printing
Patent

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Profile ID: LFUS-PAI-P-1445013

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