1660167

Information

• Patent Grant
• 1660167

• References
• Source

• Patent Number

  1,660,167

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1928
  96 years ago

• CPC

  • D06P1/42 - using basic dyes without azo groups

• US Classifications

  • 008 - Bleaching and dyeing