4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Roland Keck

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Device for the measurement of forces or pressures

Measuring and testing – Volumetric content measuring
Patent

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Electromagnet transducer

Measuring and testing – Vibration – By mechanical waves
Patent

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Method and apparatus for interferometric detection of surface di

Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
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Method and device for examining components with data digitized i

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Profile ID: LFUS-PAI-P-568811

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