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

Roger L. Marvin

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Additive tri-color lamphouse for a photographic printer

Photocopying – Projection printing and copying cameras – Multicolor picture
Patent

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Magnetic film carrier

Photocopying – Projection printing and copying cameras – Detailed holder for original
Patent

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Self-threading take-up magazine for a photographic printer

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

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Profile ID: LFUS-PAI-P-1710315

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