3587813

Information

• Patent Grant
• 3587813

• References
• Source

• Patent Number

  3,587,813

• Date Filed

  Not available

• Date Issued

  Monday, June 28, 1971
  53 years ago

• CPC

  • B41J33/516 - using a reversing-feeler responsive to the tension of the ribbon

• US Classifications

  • 400 - Typewriting machines