Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D331446 | Water filter | — | 1992-12-01 |
| 5142798 | Downhill ski boot assembly | William H. Kaufman, Frederick A. Harrison, Gerald Beekenkamp | 1992-09-01 |
| 5068984 | Downhill ski boot assembly | William H. Kaufman, Frederick A. Harrison, Gerald Beekenkamp | 1991-12-03 |
| 4959912 | Downhill ski boot assembly | William H. Kaufman, Frederick A. Harrison, Gerald Beekenkamp | 1990-10-02 |