Patents by Inventor William L. Crown

William L. Crown 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).

  • Insect trap
    Patent number: D335912
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: May 25, 1993
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: Jeffrey K. Brown, William L. Crown, Ronald R. Dir, Edward J. Lazzeroni, Sr., John F. Quella