Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7948378 | Tamperproof non-contact switch | Michael Magargee, William Porthouse, Thornton Caraway | 2011-05-24 |
| 5228525 | Adaptor for earth boring machine | Michael D. Howman, Ronald E. Peacock | 1993-07-20 |