4. Photocopying
  5. Projection printing and copying cameras
  6. Detailed holder for photosensitive paper

Karl Dreher

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Apparatus for collecting webs of photographic paper or the like

Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent

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Apparatus for convoluting webs onto rotary cores

Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent

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Photographic copying machine

Advancing material of indeterminate length – Threading device
Patent

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Photographic copying machine

Photocopying – Projection printing and copying cameras – Detailed holder for photosensitive paper
Patent

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Profile ID: LFUS-PAI-P-714297

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