3633506

Information

• Patent Grant
• 3633506

• References
• Source

• Patent Number

  3,633,506

• Date Filed

  Not available

• Date Issued

  Tuesday, January 11, 1972
  53 years ago

• CPC

  • B41K3/58 - using ink ribbons, ink sheets, or carbon tape or paper

• US Classifications

  • 101 - Printing
  • 400 - Typewriting machines