Patents by Inventor Dan R. Campbell

Dan R. Campbell 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: 4322784
    Abstract: This invention relates to polymer sealed beam headlamp units having trim rim reference planes integrally molded therewith. The headlamp includes a polymer envelope having a reference plane integrally molded with the reflector portion of the envelope which projects radially outward and forward therefrom for providing a precise reference plane forward of the lamp face.
    Type: Grant
    Filed: October 16, 1979
    Date of Patent: March 30, 1982
    Assignee: General Electric Company
    Inventors: Bruce E. Shanks, Dan R. Campbell