3786906

Information

• Patent Grant
• 3786906

• References
• Source

• Patent Number

  3,786,906

• Date Filed

  Not available

• Date Issued

  Tuesday, January 22, 1974
  50 years ago

• CPC

  • B41J33/50 - comprising a single pawl or integral double-tooth pawl selectively engageable with two ratchets, one for each spool
  • B41J33/512 - using a pivoted reversing-feeler engaging the external periphery of the wound ribbon

• US Classifications

  • 400 - Typewriting machines