3888727

Information

• Patent Grant
• 3888727

• References
• Source

• Patent Number

  3,888,727

• Date Filed

  Not available

• Date Issued

  Tuesday, June 10, 1975
  49 years ago

• CPC

  • D21C3/263 - at least one stage being in presence of oxygen

• US Classifications

  • 162 - Paper making and fiber liberation
  • 008 - Bleaching and dyeing