4. Photocopying
  5. Projection printing and copying cameras
  6. Multicolor picture

Yong-hag Choi

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Photographic printer

Photocopying – Projection printing and copying cameras – Multicolor picture
Patent

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Zoom lens barrel driving system for camera

Photography – Having variable focal length of camera objective – Having focus operation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1250361

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