2272117

Information

• Patent Grant
• 2272117

• References
• Source

• Patent Number

  2,272,117

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1942
  82 years ago

• CPC

  • G03C11/04 - Retouching
  • G03C11/18 - Colouring

• US Classifications

  • 008 - Bleaching and dyeing
  • 430 - Radiation imagery chemistry: process, composition, or product thereof