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

Optek Corporation

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Lens barrel extending and retracting mechanisms

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

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Lens barrels

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

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Lens barrels

Photography – Camera detail – Shutter
Reexamination Certificate

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Zoom finder drive mechanisms

Photography – Having variable focal length of camera objective – Having direct viewfinder
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2901726

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