1379156

Information

• Patent Grant
• 1379156

• References
• Source

• Patent Number

  1,379,156

• Date Filed

  Not available

• Date Issued

  Tuesday, May 24, 1921
  103 years ago

• CPC

  • D21H5/1281 - by chemical treatment
  • D21H17/67 - Water-insoluble compounds
  • D21H25/02 - Chemical or biochemical treatment

• US Classifications

  • 427 - Coating processes
  • 008 - Bleaching and dyeing
  • 162 - Paper making and fiber liberation