4. Optics: measuring and testing
  5. By dispersed light spectroscopy

Camiel Heffels

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Apparatus for spectroscopic analysis of a fluid medium by...

Optics: measuring and testing – By dispersed light spectroscopy
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Device for the IR-spectrometric analysis of a solid, liquid...

Optics: measuring and testing – By shade or color – With color transmitting filter
Reexamination Certificate

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Method and apparatus for determining physical collective...

Optics: measuring and testing – By particle light scattering – With photocell detection
Reexamination Certificate

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Non-dispersive infrared gas analyzer

Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
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Profile ID: LFUS-PAI-P-2565946

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