1218424

Information

• Patent Grant
• 1218424

• References
• Source

• Patent Number

  1,218,424

• Date Filed

  Not available

• Date Issued

  Tuesday, March 6, 1917
  108 years ago

• CPC

  • E21B17/02 - Couplings joints
  • Y10T403/251 - External reservoir
  • Y10T403/32861 - T-pivot, e.g., wrist pin, etc.
  • Y10T403/32951 - Transverse pin or stud

• US Classifications

  • 403 - Joints and connections