3412839

Information

• Patent Grant
• 3412839

• References
• Source

• Patent Number

  3,412,839

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1968
  56 years ago

• CPC

  • B41J33/518 - the reversing-feeler engaging buttons or the like secured to the ribbon near its end
  • B41J35/14 - for multicolour work for ensuring maximum life of ink ribbon for rendering ink-ribbon inoperative

• US Classifications

  • 400 - Typewriting machines