1371843

Information

• Patent Grant
• 1371843

• References
• Source

• Patent Number

  1,371,843

• Date Filed

  Not available

• Date Issued

  Tuesday, March 15, 1921
  103 years ago

• CPC

  • B43M7/008 - with a cylindrical cutter
  • Y10S83/912 - Envelope openers
  • Y10T83/5851 - Carried by tool or tool support
  • Y10T83/8796 - Progressively cutting
  • Y10T83/9394 - Helical tool

• US Classifications

  • 083 - Cutting
  • 269 - Work holders