2607680

Information

• Patent Grant
• 2607680

• References
• Source

• Patent Number

  2,607,680

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1952
  72 years ago

• CPC

  • D21C7/08 - Discharge devices
  • D21C3/266 - the same pulping agent being used in all stages

• US Classifications

  • 162 - Paper making and fiber liberation