Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6350360 | Method of fabricating a 3-dimensional tool master | John T. Hachman | 2002-02-26 |
| 4812210 | Measuring surfactant concentration in plating solutions | Joseph C. Farmer, John T. Hachman | 1989-03-14 |