Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5857918 | Bumper system for a bowling alley | — | 1999-01-12 |
| 5415591 | Arcuate gutter displacement for bumper bowling | — | 1995-05-16 |
| 5207422 | Bowling alley bumper system | — | 1993-05-04 |
| 4900024 | Bowling alley bumper system | John W. Chandler | 1990-02-13 |