4. Optics: measuring and testing
  5. By dispersed light spectroscopy
  6. Utilizing a spectrometer

Donald K. Cohen

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An adjustable-optical prism with integral-polarizing beam splitt

Patent

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Apparatus and method for automatically focusing an interference

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Apparatus and method for automatically focusing an interference

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Apparatus and method for simultaneous measurement of film thickn

Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
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Automatic faucet with polarization sensor

Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Reexamination Certificate

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