2156069

Information

• Patent Grant
• 2156069

• References
• Source

• Patent Number

  2,156,069

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1939
  85 years ago

• CPC

  • D06P3/44 - preparing azo dyes on the material
  • D06P3/007 - preparing dyes in situ

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof
  • 008 - Bleaching and dyeing