Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5536025 | In-line wheeled skate | — | 1996-07-16 |
| 5393285 | Exercise apparatus | Kenneth A. Fischer, Frederick R. Greer, Kenneth W. Pratt, Michael K. Pratt | 1995-02-28 |
| 4603025 | Method for pour casting roller skate wheel | Charles Chen | 1986-07-29 |
| D261542 | Integral shoe sole and wheel mounting for roller skate | Alvan H. Wolf | 1981-10-27 |
| 4295655 | Roller skating shoe | Alvan H. Wolf | 1981-10-20 |
| 4245406 | Athletic shoe | Alvan H. Wolf | 1981-01-20 |