3693389

Information

• Patent Grant
• 3693389

• References
• Source

• Patent Number

  3,693,389

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1972
  52 years ago

• CPC

  • B21H3/025 - Rolling locking screws

• US Classifications

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