4. Measuring and testing
  5. Volume or rate of flow
  6. Using differential pressure

Fred C. Webb

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A.C. Power entry module

Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent

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Apparatus for measuring small values of air flow

Measuring and testing – Volume or rate of flow – Using differential pressure
Patent

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Device and method for opening a door

Movable or removable closures – Operator interrelated with closure latch release – Actuator or opposite approaches
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1369030

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