Patents by Inventor Robert E. Bidwell

Robert E. Bidwell 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).

  • Surgical drainage system with pressure indicator
    Patent number: 4015603
    Abstract: A surgical drainage system is provided for the drainage of fluid from a body cavity which comprises a first collection compartment, a second compartment, and a connecting passageway for connecting the first and second compartment in fluid communication. The volume of the connecting passageway is insignificant with respect to the second compartment and the connecting passageway provides a visual indication of changes in pressure in the body cavity by reason of oscillation of collected fluid therein.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: April 5, 1977
    Assignee: Deknatel Inc.
    Inventors: Leonard D. Kurtz, Robert E. Bidwell