461666

Information

• Patent Grant
• 461666

• References
• Source

• Patent Number

  461,666

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1891
  133 years ago

• CPC

  • B23B51/0072 - Drills for making non-circular holes
  • Y10T408/35 - including plural rotating tools
  • Y10T408/55 - with work-engaging structure other than Tool or tool-support

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool