447224

Information

• Patent Grant
• 447224

• References
• Source

• Patent Number

  447,224

• Date Filed

  Not available

• Date Issued

  Tuesday, February 24, 1891
  134 years ago

• CPC

  • F16B39/12 - by means of locknuts
  • Y10S411/931 - Superposed nuts
  • Y10S411/973 - Gravity bolthead, nut or washer

• US Classifications

  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener