3656846

Information

• Patent Grant
• 3656846

• References
• Source

• Patent Number

  3,656,846

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1972
  54 years ago

• CPC

  • G03B23/046 - Picture changing devices

• US Classifications

  • 353 - Optics: image projectors
  • 040 - Card, picture, or sign exhibiting