3664869

Information

• Patent Grant
• 3664869

• References
• Source

• Patent Number

  3,664,869

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  52 years ago

• CPC

  • B41J31/05 - Ink ribbons having coatings other than impression-material coatings
  • B41J31/09 - Ink ribbons characterised by areas carrying media for obliteration or removal of typing errors
  • Y10T428/31797 - Next to addition polymer from unsaturated monomers
  • Y10T428/3192 - Next to vinyl or vinylidene chloride polymer

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 400 - Typewriting machines
  • 427 - Coating processes