Patents by Inventor Dwight M. Armitage

Dwight M. Armitage 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).

  • Trim for chalkboards and tackboards
    Patent number: 5220763
    Abstract: A trim mounting system for mounting display boards such as chalkboards, tackboards, dry marker boards and the like to a wall. The system includes a plurality of one-piece, extruded metal trim members and combination trim-mount/grounds each having lengths corresponding to the side dimensions of the display board. The trim members and trim-mount/grounds are provided with interlocking portions which extend continuously along their lengths, permitting simplified mounting of the trim members.
    Type: Grant
    Filed: May 7, 1991
    Date of Patent: June 22, 1993
    Assignee: Wilson-Partenheimer, Inc.
    Inventor: Dwight M. Armitage