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

Joachim Hagemann

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Apparatus for measuring the flow of a fluid medium

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

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Method and apparatus in a communication network for...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
Reexamination Certificate

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Method for the temporary allocation of terminals and users...

Telephonic communications – With usage measurement
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1893146

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