4. Measuring, testing, or signalling instruments
  5. Measuring, regulating or indicating instrument, or casing
  6. Volume, flow or rate

Holger Sack

Inventor

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Instrument housing with transparent cover

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Design Patent

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Radiometric measuring device with a two-wire supply

Radiant energy – Invisible radiant energy responsive electric signalling – Fluent material level signalling
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3266432

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