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

Yiu Hung Li

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Collapsible lens barrel

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

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Electronic equipment and camera

Photography – With exposure objective focusing means – focusing aid – or... – Mechanical mechanism for displacement of exposure objective
Reexamination Certificate

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Finder housing

Photography – With viewfinder – Lens detail
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2847142

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