1920987

Information

• Patent Grant
• 1920987

• References
• Source

• Patent Number

  1,920,987

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1933
  91 years ago

• CPC

  • D06P1/65162 - Hydrocarbons without halogen
  • C09B67/0071 - Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
  • Y10S8/921 - Cellulose ester or ether

• US Classifications

  • 008 - Bleaching and dyeing