Patents by Inventor Donald R. Iams

Donald R. Iams 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).

  • Drywell structure
    Patent number: 4720209
    Abstract: A drywell structure for receiving drain water from a ground surface and directing it to subterranean levels for leaching the water into the subterranean soil is provided with a water filtration and intake assembly which filters silt and other foreign matter from the received drain water prior to its being directed to the subterranean soil.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: January 19, 1988
    Inventor: Donald R. Iams