2052427

Information

• Patent Grant
• 2052427

• References
• Source

• Patent Number

  2,052,427

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1936
  88 years ago

• CPC

  • E21B6/06 - the rotation being intermittent, e.g.obtained by ratchet device
  • Y10S411/978 - Pawl and ratchet
  • Y10T74/1527 - Screw and nut devices

• US Classifications

  • 074 - Machine element or mechanism
  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener