Patents by Inventor E. B. Brown

E. B. Brown 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).

  • Alarm device responsive to movement of protected object, power source condition and alarm ground path
    Patent number: 4327360
    Abstract: An alarm adapted to be mounted on an object to be protected is provided with sensing means for sensing any one of (a) a movement of the protected object, (b) a disruption of an applied voltage source, and (c) a disruption of an alarm ground path. The alarm is further provided with signal generating and timing means to produce a two-frequency alarm signal for a selectable length of time.
    Type: Grant
    Filed: June 10, 1980
    Date of Patent: April 27, 1982
    Inventor: E. B. Brown