1722390

Information

• Patent Grant
• 1722390

• References
• Source

• Patent Number

  1,722,390

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1929
  95 years ago

• CPC

  • B21K1/705 - Castellated nuts
  • Y10S409/903 - Work holder

• US Classifications

  • 470 - Threaded, headed fastener, or washer making: process and apparatus
  • 409 - Gear cutting, milling, or planing