4. Measuring, testing, or signalling instruments
  5. Measuring, regulating or indicating instrument, or casing
  6. Electrical property

Rudolph William Krolopp

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Microphone or similar article

Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent

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Vehicular telephone apparatus or similar article

Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent

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Wattmeter or similar housing

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent

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Profile ID: LFUS-PAI-P-401590

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