Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D274741 | Game ball racket | Drew J. Yuhas, Frank J. Duggan, Thomas Johnson, Paul A. Witte | 1984-07-17 |
| D272553 | Squash racket | Drew J. Yuhas, Frank J. Duggan, Thomas Johnson | 1984-02-07 |
| D257563 | Racquetball racket | Paul A. Witte, Thomas Johnson | 1980-11-25 |