1981426

Information

• Patent Grant
• 1981426

• References
• Source

• Patent Number

  1,981,426

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  90 years ago

• CPC

  • G03C5/386 - Hardening-fixing

• US Classifications

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