1891832

Information

• Patent Grant
• 1891832

• References
• Source

• Patent Number

  1,891,832

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1932
  92 years ago

• CPC

  • E21B19/16 - Connecting or disconnecting pipe couplings or joints
  • Y10S81/02 - Spiral drive for wrenches

• US Classifications

  • 166 - Wells
  • 081 - Tools
  • 175 - Boring or penetrating the earth
  • 294 - Handling: hand and hoist-line implements