1453839

Information

• Patent Grant
• 1453839

• References
• Source

• Patent Number

  1,453,839

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1923
  101 years ago

• CPC

  • B41J19/36 - Driving mechanism
  • B41J11/04 - Roller platens
  • B41J11/22 - Paper carriage guides or races
  • B41J19/74 - with special means to maintain character-spacing or back- spacing elements in engagement during case-shift or like movement

• US Classifications

  • 400 - Typewriting machines