3645604

Information

• Patent Grant
• 3645604

• References
• Source

• Patent Number

  3,645,604

• Date Filed

  Not available

• Date Issued

  Tuesday, February 29, 1972
  52 years ago

• CPC

  • G02F1/13476 - in which at least one liquid crystal cell or layer assumes a scattering state
  • G09F9/46 - in which the desired character is selected from a number of characters arranged one behind the other
  • G02F2203/30 - Gray scale

• US Classifications

  • 349 - Liquid crystal cells, elements and systems
  • 040 - Card, picture, or sign exhibiting