4. Measuring and testing
  5. With fluid pressure
  6. Leakage

Arthur C. Evans

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Calibration of air leak detection apparatus

Measuring and testing – With fluid pressure – Leakage
Patent

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Fully automatic systematic timekeeping clock

Measuring – testing – or signalling instruments – Time-measuring instrument or casing – Recording – e.g. – time clock – etc.
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Profile ID: LFUS-PAI-P-35014

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