Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5009421 | Table tennis ball serving device | Gary Gatchel, Joseph E. Newgarden | 1991-04-23 |
| 4917380 | Table tennis ball serving device | Gary Gatchel, Joseph E. Newgarden | 1990-04-17 |
| 4854588 | Table tennis ball serving device | Gary Gatchel, Joseph E. Newgarden | 1989-08-08 |
| 4844458 | Table tennis ball serving device | Gary Gatchel, Joseph E. Newgarden | 1989-07-04 |