Patents by Inventor William C. Welker

William C. Welker 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).

  • Coffee maker
    Patent number: 4757754
    Abstract: An apparatus for brewing coffee comprising an inlet and outlet valve attached to a conduit for flowing water, a pump means interposed between said valves. A heating element comprising a coil and a burner plate. Connected to the outlet valve is a reducing nipple and water distributor.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: July 19, 1988
    Inventor: William C. Welker