3867631

Information

• Patent Grant
• 3867631

• References
• Source

• Patent Number

  3,867,631

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1975
  49 years ago

• CPC

  • G01M3/205 - accessories and associated equipment, pump constructions
  • H01J49/0427 - using a membrane permeable to gases

• US Classifications

  • 250 - Radiant energy