4. Optical: systems and elements
  5. Lens
  6. With variable magnification

Youngjoo Yee

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Display apparatus filter and plasma display apparatus using...

Electric lamp and discharge devices – With gas or vapor – Three or more electrode discharge device
Reexamination Certificate

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Micro actuator for controlling focal depth

Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2944709

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