Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836042 | Bearing-like device using magnetic force to actively aid or enhance turning or spinning movement | Samuel Stoltzfus | 2004-12-28 |
| 6731038 | Bearing-like device using magnetic force to actively aid or enhance turning or spinning movement | Samuel Stoltzfus | 2004-05-04 |