2188774

Information

• Patent Grant
• 2188774

• References
• Source

• Patent Number

  2,188,774

• Date Filed

  Not available

• Date Issued

  Tuesday, January 30, 1940
  84 years ago

• CPC

  • D06P3/3213 - monoazo

• US Classifications

  • 008 - Bleaching and dyeing
  • 534 - Organic compounds