3369441

Information

• Patent Grant
• 3369441

• References
• Source

• Patent Number

  3,369,441

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1968
  58 years ago

• CPC

  • B25B15/004 - characterised by cross-section
  • B25B13/485 - for theft-proof screws, bolts or nuts
  • F16B23/0007 - characterised by the shape of the recess or the protrusion engaging the tool
  • F16B23/0046 - having one eccentric circular or polygonal recess or protrusion
  • Y10S411/919 - Screw having driving contacts

• US Classifications

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