4. Optical: systems and elements
  5. Compound lens system
  6. Telescope

Denis Guettier

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Binocular viewing device and its assembly process

Optical: systems and elements – Compound lens system – Telescope
Patent

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Imaging device with focus switching means for day and night...

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate

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Profile ID: LFUS-PAI-P-584916

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