1877658

Information

• Patent Grant
• 1877658

• References
• Source

• Patent Number

  1,877,658

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1932
  92 years ago

• CPC

  • G03C7/10 - with regular areas of colour

• US Classifications

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