2155475

Information

• Patent Grant
• 2155475

• References
• Source

• Patent Number

  2,155,475

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1939
  85 years ago

• CPC

  • G03C1/122 - Azacyanines

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof
  • 546 - Organic compounds
  • 548 - Organic compounds