Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5868629 | Ball lift device and method | David Russell VanDuyn | 1999-02-09 |
| 5641538 | Apparatus and method for selectively metering dressing onto a bowling lane surface | Stephen F. Caffrey, Ronald L. Smith, Leonid Feldman | 1997-06-24 |