4. Optical: systems and elements
  5. Lens
  6. Eyepiece

Hui-Qing Chen

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Laser distance measuring system with a shutter mechanism

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

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Laser distance-measuring device

Optics: measuring and testing – Angle measuring or angular axial alignment – Photodetection of inclination from level or vertical
Reexamination Certificate

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Optical system for telescope

Optical: systems and elements – Lens – Eyepiece
Reexamination Certificate

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Optical system for telescope

Optical: systems and elements – Lens – Eyepiece
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2368167

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