3664858

Information

• Patent Grant
• 3664858

• References
• Source

• Patent Number

  3,664,858

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  52 years ago

• CPC

  • B41M5/288 - using gas liberating compounds
  • B41M5/30 - using chemical colour formers
  • Y10S428/913 - Material designed to be responsive to temperature, light, moisture
  • Y10T428/31938 - Polymer of monoethylenically unsaturated hydrocarbon

• US Classifications

  • 503 - Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor
  • 428 - Stock material or miscellaneous articles