3031057

Information

• Patent Grant
• 3031057

• References
• Source

• Patent Number

  3,031,057

• Date Filed

  Not available

• Date Issued

  Tuesday, April 24, 1962
  63 years ago

• CPC

  • B41J19/84 - in the form of a roller rotated for line spacing

• US Classifications

  • 400 - Typewriting machines