3781143

Information

• Patent Grant
• 3781143

• References
• Source

• Patent Number

  3,781,143

• Date Filed

  Not available

• Date Issued

  Tuesday, December 25, 1973
  51 years ago

• CPC

  • F04B19/20 - Other positive-displacement pumps
  • A61M1/1037 - Pumps having flexible elements
  • F04B43/0027 - without valves
  • F04B43/08 - having tubular flexible members
  • F04B53/1077 - Flow resistance valves
  • Y10T137/2207 - Operating at timed intervals [e.g., to produce pulses]

• US Classifications

  • 417 - Pumps
  • 137 - Fluid handling