3871757

Information

• Patent Grant
• 3871757

• References
• Source

• Patent Number

  3,871,757

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1975
  49 years ago

• CPC

  • G03B23/105 - disc carriers
  • 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
  • 359 - Optical: systems and elements