2257440

Information

• Patent Grant
• 2257440

• References
• Source

• Patent Number

  2,257,440

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1941
  83 years ago

• CPC

  • G03C5/38 - Fixing Developing-fixing Hardening-fixing
  • G03C5/386 - Hardening-fixing

• US Classifications

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