4. Electricity: measuring and testing
  5. Impedance, admittance or other quantities representative of...
  6. Distributive type parameters

Richard Harper

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Controlling a telecommunications device

Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate

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Controlling a telecommunications device

Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate

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Measurement of gas and water content in oil

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Patent

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Visual answering machine

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Reexamination Certificate

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Profile ID: LFUS-PAI-P-491901

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