1542893

Information

• Patent Grant
• 1542893

• References
• Source

• Patent Number

  1,542,893

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1925
  99 years ago

• CPC

  • B23G5/06 - Taps
  • B23G2200/48 - Spiral grooves
  • Y10T408/9044 - including cutting teeth of different width

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
  • 470 - Threaded, headed fastener, or washer making: process and apparatus