3821897

Information

• Patent Grant
• 3821897

• References
• Source

• Patent Number

  3,821,897

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1974
  50 years ago

• CPC

  • G01F1/386 - with mechanical or fluidic indication
  • G01L11/006 - hydraulic or pneumatic counterbalancing forces
  • Y10T137/2409 - With counter-balancing pressure feedback to the modulating device

• US Classifications

  • 073 - Measuring and testing
  • 137 - Fluid handling