Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6469794 | High resolution non-contact interior profilometer | Martin S. Piltch, R. Alan Patterson, Gerald W. Leeches, John Van Nierop | 2002-10-22 |
| 6229617 | High resolution non-contact interior profilometer | Martin S. Piltch, R. Alan Patterson, Gerald W. Leeches, John Van Nierop | 2001-05-08 |
| 4249854 | Low profile fork lift for mine vehicles | — | 1981-02-10 |
| 4232930 | Battery plug and receptacle for use in mines | — | 1980-11-11 |