Patents by Inventor Arthur H. Duncan

Arthur H. Duncan 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).

  • Bar of soap or detergent
    Patent number: D348955
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: July 19, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Andrew P. Crewe, Arthur H. Duncan, John D. Wagner