990581

Information

• Patent Grant
• 990581

• References
• Source

• Patent Number

  990,581

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1911
  113 years ago

• CPC

  • B21K1/704 - Cap nuts
  • Y10S411/929 - Thread lock
  • Y10T29/49599 - Knob or knob shank making
  • Y10T29/4992 - by flaring inserted cup or tube end
  • Y10T29/49938 - Radially expanding part in cavity, aperture, or hollow body

• US Classifications

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