3663357

Information

• Patent Grant
• 3663357

• References
• Source

• Patent Number

  3,663,357

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1972
  53 years ago

• CPC

  • D21C9/1073 - with O3

• US Classifications

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