3673939

Information

• Patent Grant
• 3673939

• References
• Source

• Patent Number

  3,673,939

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1972
  52 years ago

• CPC

  • G03D9/025 - for colour films
  • G03B17/34 - Changing plates or cut films
  • G03B17/52 - of the Land type
  • G03C8/46 - characterised by the trapping means or gas releasing means

• US Classifications

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