2147834

Information

• Patent Grant
• 2147834

• References
• Source

• Patent Number

  2,147,834

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1939
  86 years ago

• CPC

  • D06P3/3206 - using acid dyes

• US Classifications

  • 008 - Bleaching and dyeing
  • 534 - Organic compounds