2022918

Information

• Patent Grant
• 2022918

• References
• Source

• Patent Number

  2,022,918

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1935
  89 years ago

• CPC

  • E21B3/02 - Surface drives for rotary drilling
  • F16J15/40 - by means of fluid
  • Y10T74/18424 - Mangle connections

• US Classifications

  • 074 - Machine element or mechanism