Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6866589 | Ice rink | John D. Ross, John H. Ross | 2005-03-15 |
| 5800274 | Bowling alley bumper system for producing visual effects | John Madsen, Winston Sanders, Darrin Bryant, Leonard Pauley | 1998-09-01 |
| 5417616 | Spring biased bumper bowling system | — | 1995-05-23 |