1840529

Information

• Patent Grant
• 1840529

• References
• Source

• Patent Number

  1,840,529

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1932
  93 years ago

• CPC

  • G03C5/22 - Direct chromate processes

• US Classifications

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