2991853

Information

• Patent Grant
• 2991853

• References
• Source

• Patent Number

  2,991,853

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1961
  63 years ago

• CPC

  • E21B15/00 - Derricks Masts; Other supports
  • Y10T292/0847 - Screw
  • Y10T403/1674 - for latch or retainer

• US Classifications

  • 403 - Joints and connections
  • 292 - Closure fasteners