Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10017991 | Hammer drill | Gunther HH von Gynz-Rekowski, Michael V. Williams | 2018-07-10 |
| 9976350 | Up drill apparatus and method | Gunther HH von Gynz-Rekowski, Michael V. Williams, Chaitanya P. Challa, Frank R. Vignal | 2018-05-22 |