4. Photocopying
  5. Projection printing and copying cameras
  6. Focus or magnification control

David N. Redden

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Method and apparatus for controlling humidity in a copying...

Photocopying – Projection printing and copying cameras – With temperature or foreign particle control
Reexamination Certificate

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Method and apparatus for controlling humidity in a copying...

Photocopying – Projection printing and copying cameras – With temperature or foreign particle control
Reexamination Certificate

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Multiple range variable magnification reproduction machine

Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent

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Optical system for providing visual aid for proper magnification

Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent

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Profile ID: LFUS-PAI-P-1498267

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