1818927

Information

• Patent Grant
• 1818927

• References
• Source

• Patent Number

  1,818,927

• Date Filed

  Not available

• Date Issued

  Tuesday, August 11, 1931
  93 years ago

• CPC

  • G03C7/10 - with regular areas of colour

• US Classifications

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