2867824

Information

• Patent Grant
• 2867824

• References
• Source

• Patent Number

  2,867,824

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1959
  66 years ago

• CPC

  • B21D53/20 - washers
  • Y10S411/958 - Coiled washer
  • Y10T83/0572 - Plural cutting steps effect progressive cut

• US Classifications

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