Patents by Inventor Donald C. Roylance

Donald C. Roylance 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).

  • Smoke detector with masking shield
    Patent number: 4529976
    Abstract: A smoke detector is provided with a masking shield which obscures the smoke detector housing from normal view. Particularly in the case of installation of smoke detectors in children's bedrooms, the invention prevents the detector from appearing as a representation of the threat of fire.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: July 16, 1985
    Assignee: Frederick M. Jameson
    Inventors: Frederick M. Jameson, Donald C. Roylance