1874378

Information

• Patent Grant
• 1874378

• References
• Source

• Patent Number

  1,874,378

• Date Filed

  Not available

• Date Issued

  Tuesday, August 30, 1932
  92 years ago

• CPC

  • B23G5/06 - Taps
  • Y10T408/9045 - and different root circles

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 470 - Threaded, headed fastener, or washer making: process and apparatus