Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5848792 | Target construction | — | 1998-12-15 |
| 4979739 | Ball return control apparatus | Bruce Allen, Richard B. Shelton, Ullrich K. A. Kunnecke, Edward K. Miguel | 1990-12-25 |
| 4836556 | Dart game target construction | Donald P. DeVale, Gregory William Lantz | 1989-06-06 |
| 4586716 | Double bullseye for dart game | Leonard J. Kubacki | 1986-05-06 |
| 4516781 | Dart game with two microcomputers | Donald P. DeVale, Robert W. Van Naarden | 1985-05-14 |
| 4319434 | Surface processing machine | — | 1982-03-16 |