1446993

Information

• Patent Grant
• 1446993

• References
• Source

• Patent Number

  1,446,993

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1923
  102 years ago

• CPC

  • B41J25/20 - Auxiliary type mechanisms for printing distinguishing marks
  • Y10S400/904 - Subscript or superscript character

• US Classifications

  • 400 - Typewriting machines