2220233

Information

• Patent Grant
• 2220233

• References
• Source

• Patent Number

  2,220,233

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1940
  84 years ago

• CPC

  • G03C7/04 - Additive processes using colour screens Materials therefor Preparing or processing such materials
  • G03B33/00 - Colour photography, other than mere exposure or projection of a colour film
  • G03C7/00 - Multicolour photographic processes or agents therefor Regeneration of such processing agents Photosensitive materials for multicolour processes

• US Classifications

  • 355 - Photocopying