Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5531274 | Lightweight proppants and their use in hydraulic fracturing | — | 1996-07-02 |
| 4476997 | Automatic device to distribute, orient and position axes on machines | Marc Lacroix | 1984-10-16 |