4. Electricity: measuring and testing
  5. Measuring, testing, or sensing electricity, per se
  6. Cathode ray

David William Allen

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Electronic measuring instrument combining an oscilloscope and a

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Cathode ray
Patent

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Navigation system

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Design Patent

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Profile ID: LFUS-PAI-P-809468

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