3775790

Information

• Patent Grant
• 3775790

• References
• Source

• Patent Number

  3,775,790

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1973
  51 years ago

• CPC

  • F16B37/002 - cutting threads during screwing; removing paint or dirt layers covering threaded shanks
  • B21D53/20 - washers
  • B21K1/70 - of special shape

• US Classifications

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