1813632

Information

• Patent Grant
• 1813632

• References
• Source

• Patent Number

  1,813,632

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1931
  93 years ago

• CPC

  • D21B1/38 - Conserving the finely-divided cellulosic material

• US Classifications

  • 162 - Paper making and fiber liberation