Patents by Inventor Louis DeGrose

Louis DeGrose 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).

  • Water tempering system
    Patent number: 4412526
    Abstract: A water tempering system for preheating water comprises a storage tank for tempered water; a water tempering unit containing S-shaped heat exchange tubes positioned in the exhaust flue of a furnace; first conduit means for conveying water from the storage tank to the tempering unit; and second conduit means for conveying water from the tempering unit to either the storage tank or an outlet tube for the water tempering system.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: November 1, 1983
    Inventor: Louis DeGrose