1837648

Information

• Patent Grant
• 1837648

• References
• Source

• Patent Number

  1,837,648

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1931
  93 years ago

• CPC

  • E21B17/043 - with locking means
  • Y10T279/17941 - Nut lock

• US Classifications

  • 279 - Chucks or sockets