639910

Information

• Patent Grant
• 639910

• References
• Source

• Patent Number

  639,910

• Date Filed

  Not available

• Date Issued

  Tuesday, December 26, 1899
  125 years ago

• CPC

  • B23D45/126 - with the tool turning around the workpieces
  • Y10T408/3555 - Adapted to cut entire thickness of work at one pass
  • Y10T408/3788 - Plural pairs of coaxial, opposed tools

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 079 - Button making