Patents by Inventor Gert W. Soderstrom

Gert W. Soderstrom 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).

  • Drain pipe
    Patent number: 4389138
    Abstract: A drain pipe consisting of an outer pipe casing, which downwardly or on the lower surface is provided in the longitudinal direction with a recess, from which two partition walls extend upward and are connected at the upper end to the inside of the pipe casing via extensions of the partition walls resembling inclined roofs. In the inclined roof shaped extensions, which are connected in a line at the inside of the pipe casing, overflow openings are milled in a single operation.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: June 21, 1983
    Inventor: Gert W. Soderstrom