Patents by Inventor Darryl K. Bergstrom

Darryl K. Bergstrom 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).

  • Collapsible lightweight and rigidly compact multiple projector stand
    Patent number: 4653717
    Abstract: A light weight inherently stable and rigid projector stand for multi-axis projection of images onto a common screen by magazine loaded slide projectors, maximizing close proximity of the projection axes, with improved magazine access, and direct support of each projector for pitch axis and roll axis and yaw axis adjustment, the stand being also adjustable for pitch, roll and yaw and unison adjustment of the multiplicity of projection axes.
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: March 31, 1987
    Assignee: Daedalus Industries, Inc.
    Inventor: Darryl K. Bergstrom