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

Chun-Hao Chen

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Disk-shaped antenna with polarization adjustment arrangement

Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate

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Feed-forward automatic-gain control amplifier (FFAGCA) for...

Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias
Reexamination Certificate

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Focusing device and a telescopic tube module thereof

Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate

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Focusing device and a telescopic tube module thereof

Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate

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Pneumatic hammer drill having vibration damping end cap

Tool driving or impacting – Impacting devices – With impact cushioning means
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Profile ID: LFUS-PAI-P-2416877

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