Patents by Inventor John Duchan

John Duchan 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).

  • Pneumatic faucet attachment
    Patent number: 4252150
    Abstract: A quick connect-disconnect attachment for faucets for delivery of liquid therefrom through an extension hose. The attachment is retained by pneumatic pressure created by a hand-operated bulb. A valve permits release of the pressure therein for removal of the attachment.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: February 24, 1981
    Inventors: Harold T. Morley, Jr., John Duchan