1989571

Information

• Patent Grant
• 1989571

• References
• Source

• Patent Number

  1,989,571

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1935
  90 years ago

• CPC

  • D21C3/18 - with halogens or halogen-generating compounds
  • D21C3/24 - Continuous processes
  • D21C9/10 - Bleaching; Apparatus therefor
  • D21C9/1026 - Other features in bleaching processes

• US Classifications

  • 162 - Paper making and fiber liberation
  • 068 - Textiles: fluid treating apparatus