2784428

Information

• Patent Grant
• 2784428

• References
• Source

• Patent Number

  2,784,428

• Date Filed

  Not available

• Date Issued

  Tuesday, March 12, 1957
  67 years ago

• CPC

  • F16B39/22 - in which the locking takes place during screwing down or tightening
  • Y10S411/919 - Screw having driving contacts
  • Y10S411/932 - Oppositely threaded

• US Classifications

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