3789725

Information

• Patent Grant
• 3789725

• References
• Source

• Patent Number

  3,789,725

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1974
  50 years ago

• CPC

  • F16B25/0021 - the material being metal
  • B23G9/005 - Working nuts
  • F16B25/0084 - characterised by geometric details of the tip
  • F16B25/103 - by means of a drilling screw-point

• US Classifications

  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
  • 470 - Threaded, headed fastener, or washer making: process and apparatus