1230891

Information

• Patent Grant
• 1230891

• References
• Source

• Patent Number

  1,230,891

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1917
  107 years ago

• CPC

  • F16B39/24 - by means of washers, spring washers, or resilient plates that lock against the object
  • Y10S411/975 - Rotatable washer

• US Classifications

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