Patents by Inventor Lothar Brendgens

Lothar Brendgens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4141523
    Abstract: A projector adjustable in height includes a housing formed with a longitudinal slit at one side thereof, which slit is transverse to the axis of projection of the projector, a handle which has an axis of rotation transverse to the projection axis and to the slit, and which penetrates the housing at least partially. The handle projects from the lower portion of the housing through the slit, and may be pivoted about a point within the housing to a selected position in a direction transverse to the direction of the axle, as well as be rotated about the axis. A clamping device is substantially disposed about the housing point for clamping the handle at a selected position.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: February 27, 1979
    Assignee: Rollei-Werke Franke & Heidecke
    Inventor: Lothar Brendgens