Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5185901 | Bowling lane maintenance machine capable of self-indexing from lane-to-lane | John M. Davis, Mark E. Davis | 1993-02-16 |
| 5181290 | Bowling lane maintenance machine | John M. Davis, Mark E. Davis | 1993-01-26 |
| 4562610 | Cleaning apparatus for bowling lanes | John M. Davis | 1986-01-07 |