1329435

Information

• Patent Grant
• 1329435

• References
• Source

• Patent Number

  1,329,435

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1920
  104 years ago

• CPC

  • C09B5/04 - Pyrazolanthrones

• US Classifications

  • 548 - Organic compounds
  • 008 - Bleaching and dyeing