Patents by Inventor Douglas M. Hiemstra

Douglas M. Hiemstra 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).

  • Housing for outdoor electrical equipment
    Patent number: D416873
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: November 23, 1999
    Assignee: Harmonic Lightwaves
    Inventors: Leon Korsunsky, Douglas M. Hiemstra, Aaron Abroff, Frank D. Yashar, Krzysztof Pradzynski