639231

Information

• Patent Grant
• 639231

• References
• Source

• Patent Number

  639,231

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1899
  125 years ago

• CPC

  • B26D1/305 - for thin material
  • Y10T83/865 - Indicates work characteristic
  • Y10T83/8781 - And urged about pivotal axis
  • Y10T83/8812 - Cutting edge in radial plane

• US Classifications

  • 083 - Cutting
  • D18 - Printing and office machinery