Patents by Inventor J. David Grenley

J. David Grenley 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).

  • Hand-held can opener
    Patent number: D293199
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: December 15, 1987
    Inventor: J. David Grenley