Patents Assigned to Theodor Preussner
  • Panoramic periscope
    Patent number: 4787725
    Abstract: A panoramic periscope having a ray path for the visual observation of objects and having a central tube with an ocular or eyepiece disposed laterally thereon, the central tube being provided with a system of lenses, prisms and mirrors and having a peripheral viewing window which is mounted so as to be rotatable about the longitudinal axis of the central tube through 360.degree.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: November 29, 1988
    Assignee: Theodor Preussner
    Inventors: Theodor Preussner, Jochen S. Fischinger