Title:
THREE PLAYER CHESS GAME BOARD
United States Patent 3533627
Inventors:
Deffenbaugh, Gene
Frederick, David G.
Publication Date:
10/13/1970
Assignee:
Harry, Shaefer B.
International Classes:
A63F3/02; A63F3/02
Foreign References:
| GB189324644A | | | | |
| GB190203214A | | | | |
| NL3585C | | | | |
| GB190802902A | | | | |