Patents Assigned to Pronton-Werk Alfred Gauthier GmbH
  • Magazine for slides for the simultaneous projection of pictures and reproduction of sound
    Patent number: 3973842
    Abstract: This invention relates to camera apparatus having a mechanism containing transparent slides for projection, and, with this, there is provided a mechanism for including with these slides related sound records for reproduction concurrently with the pictorial representations.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: August 10, 1976
    Assignee: Pronton-Werk Alfred Gauthier GmbH
    Inventor: Hans Woerner