4. Optical: systems and elements
  5. Lens
  6. With light limiting or controlling means

Blair F. Campbell

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Laser range finding apparatus

Optics: measuring and testing – Range or remote distance finding – Base line instrument
Reexamination Certificate

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Laser range finding apparatus

Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate

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Local reference beam generator

Optical: systems and elements – Lens – With light limiting or controlling means
Patent

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Profile ID: LFUS-PAI-P-955778

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