2018194

Information

• Patent Grant
• 2018194

• References
• Source

• Patent Number

  2,018,194

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1935
  89 years ago

• CPC

  • E21B34/02 - in well heads
  • Y10T137/5438 - Valve actuator outside riser
  • Y10T137/7854 - In couplings for coaxial conduits, e.g., drill pipe check valves
  • Y10T137/87555 - Having direct response valve [e.g., check valve, etc.]

• US Classifications

  • 251 - Valves and valve actuation
  • 137 - Fluid handling