3547639

Information

• Patent Grant
• 3547639

• References
• Source

• Patent Number

  3,547,639

• Date Filed

  Not available

• Date Issued

  Tuesday, December 15, 1970
  54 years ago

• CPC

  • G03C1/46 - having more than one photosensitive layer
  • G03F3/101 - Colour or tonal value checking by non-photographic means or by means other than using non-impact printing methods or duplicating or marking methods covered by B41M5/00

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof