3752290

Information

• Patent Grant
• 3752290

• References
• Source

• Patent Number

  3,752,290

• Date Filed

  Not available

• Date Issued

  Tuesday, August 14, 1973
  51 years ago

• CPC

  • B41J33/516 - using a reversing-feeler responsive to the tension of the ribbon
  • B41J33/50 - comprising a single pawl or integral double-tooth pawl selectively engageable with two ratchets, one for each spool

• US Classifications

  • 400 - Typewriting machines