3649446

Information

• Patent Grant
• 3649446

• References
• Source

• Patent Number

  3,649,446

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  52 years ago

• CPC

  • D21F1/06 - Regulating pulp flow
  • G05D16/18 - derived from an external source
  • Y10T137/294 - Gas pressure controlled by amount of liquids in boiler or discharge receiver
  • Y10T137/3115 - Gas pressure storage over or displacement of liquid

• US Classifications

  • 162 - Paper making and fiber liberation
  • 137 - Fluid handling