Patents by Inventor Raymond H. Tomren

Raymond H. Tomren 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).

  • Duct lining
    Patent number: 4421455
    Abstract: A duct lining exposing a substantially smooth, liquid impermeable outer surface to fluid flowing therealong.
    Type: Grant
    Filed: December 22, 1981
    Date of Patent: December 20, 1983
    Assignee: The Garrett Corporation
    Inventor: Raymond H. Tomren