2139787

Information

• Patent Grant
• 2139787

• References
• Source

• Patent Number

  2,139,787

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1938
  86 years ago

• CPC

  • D06P3/34 - material containing ester groups

• US Classifications

  • 008 - Bleaching and dyeing
  • 534 - Organic compounds