2121931

Information

• Patent Grant
• 2121931

• References
• Source

• Patent Number

  2,121,931

• Date Filed

  Not available

• Date Issued

  Tuesday, June 28, 1938
  86 years ago

• CPC

  • E21B43/121 - Lifting well fluids
  • F04B19/16 - Adhesion-type liquid-lifting devices

• US Classifications

  • 198 - Conveyors: power-driven
  • 239 - Fluid sprinkling, spraying, and diffusing
  • 415 - Rotary kinetic fluid motors or pumps