4. Photography
  5. Having variable focal length of camera objective
  6. Lens moves in or out of light path
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Mechanism for controlling position of optical element

Photography – Having variable focal length of camera objective – Lens moves in or out of light path
Reexamination Certificate

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Mechanism for controlling position of optical element

Photography – Having variable focal length of camera objective – Lens moves in or out of light path
Reexamination Certificate

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Movable filter device

Photography – Having variable focal length of camera objective – Lens moves in or out of light path
Reexamination Certificate

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