Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10161201 | Powered slip actuation | Steven W. Wentworth, Mark D. Randa | 2018-12-25 |
| D816456 | Gut hook bladed pipe slitter | Mark D. Randa, Walter George Thompson | 2018-05-01 |
| 9915109 | Slip style rod spinner for pipe bursting machine | Steven W. Wentworth, Walter George Thompson | 2018-03-13 |