4. Optics: measuring and testing
  5. By light interference
  6. For dimensional measurement

David A. Lehoty

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Optical position sensing device including interlaced groups...

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

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Optical positioning device having shaped illumination

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

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Speckle sizing and sensor dimensions in optical positioning...

Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2971479

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