3879976

Information

• Patent Grant
• 3879976

• References
• Source

• Patent Number

  3,879,976

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • B21H9/02 - for screw-rolling machines

• US Classifications

  • 072 - Metal deforming
  • 470 - Threaded, headed fastener, or washer making: process and apparatus