Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9943889 | Hole cleaning apparatus and method | Gary A. Lipczynski, Wesley E. Holleman, Daniel Wayne Barnett | 2018-04-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9943889 | Hole cleaning apparatus and method | Gary A. Lipczynski, Wesley E. Holleman, Daniel Wayne Barnett | 2018-04-17 |