Patents by Inventor David O Rowam

David O Rowam 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).

  • Portable vacuum cleaning device
    Patent number: 8296891
    Abstract: A portable vacuuming device for underwater removal of leaves or the like of a debris field from pool bottoms and other structural surfaces, the device employing a water pump to feed a water jet within a suction cavity wherein the water inlet for the pump is exterior to the cavity and to the housing of the device, and is located well above the debris field.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: October 30, 2012
    Inventors: David O Rowam, Phillip M Rowan