3840928

Information

• Patent Grant
• 3840928

• References
• Source

• Patent Number

  3,840,928

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1974
  50 years ago

• CPC

  • B23B31/1071 - Retention by balls
  • B23G5/10 - Die-heads
  • Y10T82/2572 - Attachment
  • Y10T82/2585 - Tool rest

• US Classifications

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