2221424

Information

• Patent Grant
• 2221424

• References
• Source

• Patent Number

  2,221,424

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • A63H33/3083 - Printing machinery
  • B41J3/39 - hand-held

• US Classifications

  • 400 - Typewriting machines