3751150

Information

• Patent Grant
• 3751150

• References
• Source

• Patent Number

  3,751,150

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1973
  51 years ago

• CPC

  • G09F27/00 - Combined visual and audible advertising or displaying
  • G03B31/02 - in which sound track is on a moving-picture film
  • G03B31/06 - in which sound track is associated with successively-shown still pictures
  • G09B5/067 - Combinations of audio and projected visual presentation
  • Y10S40/906 - Sound

• US Classifications

  • 353 - Optics: image projectors
  • 040 - Card, picture, or sign exhibiting
  • 352 - Optics: motion pictures
  • 434 - Education and demonstration