Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6615434 | Bowling lane cleaning machine and method | John M. Davis | 2003-09-09 |
| 6554243 | Rollable sports base | Ronald A. White, Keith Kristiansen, Michael Ballone, Gary Grossman | 2003-04-29 |