Patents Assigned to BRK Shareholders' Committee
  • Detection of products of combustion
    Patent number: RE28915
    Abstract: A self-contained, self-powered, early warning fire detector and alarm of small size and attractive appearance especially adapted for use in residences; the detector including readily accessible sensitivity control and operability test means, and having a standby power source which additionally serves to monitor the primary power source and inform occupants of malfunction of the primary power source.
    Type: Grant
    Filed: July 13, 1973
    Date of Patent: July 20, 1976
    Assignee: BRK Shareholders' Committee
    Inventors: Wilbur L. Ogden, Clarence Glenn Henderson