Patents by Inventor Davis S. Duncan

Davis S. 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).

  • Garden pruner
    Patent number: D336412
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: June 15, 1993
    Assignee: Fiskars Oy Ab
    Inventors: Stephen Wensley, Alan S. Merrick, Davis S. Duncan