Patents by Inventor William B. Belin

William B. Belin 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 alarm apparatus
    Patent number: 5289165
    Abstract: A smoke alarm structure includes a first housing containing a sensor and audible alarm in electrical communication with a second housing. The second housing includes a back-up battery structure cooperative with a signal test button and a delay button in association to delay actuation of the audible alarm to permit audible alarms due to various signals such as cooking smoke and the like developed temporarily by individuals within a dwelling.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: February 22, 1994
    Inventor: William B. Belin