Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5275414 | Modified chess game for team play | Ryan K. Stephens, Ronald R. Plew, Robert E. Mattsey | 1994-01-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5275414 | Modified chess game for team play | Ryan K. Stephens, Ronald R. Plew, Robert E. Mattsey | 1994-01-04 |