3685893

Information

• Patent Grant
• 3685893

• References
• Source

• Patent Number

  3,685,893

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1972
  52 years ago

• CPC

  • G03B31/06 - in which sound track is associated with successively-shown still pictures
  • Y10S40/906 - Sound

• US Classifications

  • 353 - Optics: image projectors
  • 040 - Card, picture, or sign exhibiting
  • 242 - Winding, tensioning, or guiding
  • 360 - Dynamic magnetic information storage or retrieval