2178803

Information

• Patent Grant
• 2178803

• References
• Source

• Patent Number

  2,178,803

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 1939
  85 years ago

• CPC

  • B43K21/14 - with writing-cores automatically replaced from magazines
  • Y10T74/18576 - including screw and nut
  • Y10T408/904 - with pitch-stabilizing ridge

• US Classifications

  • 074 - Machine element or mechanism
  • 408 - Cutting by use of rotating axially moving tool