Patents by Inventor Michael Allgeier

Michael Allgeier 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).

  • Light mixing apparatus and photographic enlarger embodying same
    Patent number: 4129372
    Abstract: Apparatus for mixing light wherein the various color components are efficiently mixed to a uniform distribution. Light is introduced into one end of an optically clear rod-like member through a diffuser and is mixed therein through internal reflection.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: December 12, 1978
    Assignee: Vivitar Corporation
    Inventor: Michael Allgeier