3880271

Information

• Patent Grant
• 3880271

• References
• Source

• Patent Number

  3,880,271

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • B41J35/14 - for multicolour work for ensuring maximum life of ink ribbon for rendering ink-ribbon inoperative
  • B41J33/516 - using a reversing-feeler responsive to the tension of the ribbon

• US Classifications

  • 400 - Typewriting machines