2168571

Information

• Patent Grant
• 2168571

• References
• Source

• Patent Number

  2,168,571

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1939
  85 years ago

• CPC

  • C09B33/18 - Trisazo or higher polyazo dyes

• US Classifications

  • 534 - Organic compounds