3890663

Information

• Patent Grant
• 3890663

• References
• Source

• Patent Number

  3,890,663

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1975
  49 years ago

• CPC

  • B23G9/001 - Working screws

• US Classifications

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