Patents by Inventor Douglas W. Shattuck

Douglas W. Shattuck 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).

  • Electric furnace wall construction
    Patent number: 3987237
    Abstract: An electric furnace wall construction is provided and comprises a plurality of layers of heat insulating fiberboard overlying each other. Certain of the layers of fiberboard are apertured to receive ceramic hangers which support a serpentine arrangement of electric strip resistance heaters. The construction is held together by a plurality of studs and mating locking washers.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: October 19, 1976
    Assignee: General Electric Company
    Inventors: Robert J. Phillips, Douglas W. Shattuck