1899975

Information

• Patent Grant
• 1899975

• References
• Source

• Patent Number

  1,899,975

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1933
  91 years ago

• CPC

  • D06P1/65187 - Compounds containing sulfide or disulfide groups
  • D06P1/22 - using vat dyestuffs including indigo

• US Classifications

  • 008 - Bleaching and dyeing