Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1018244 | Pipe slitter | Mark D. Randa | 2024-03-19 |
| 10246949 | Slip style rod spinner for pipe bursting machine | Steven W. Wentworth, Robert F. Crane | 2019-04-02 |
| D816456 | Gut hook bladed pipe slitter | Robert F. Crane, Mark D. Randa | 2018-05-01 |
| 9915109 | Slip style rod spinner for pipe bursting machine | Steven W. Wentworth, Robert F. Crane | 2018-03-13 |
| 9566653 | Pipe slitter | Mark D. Randa, Robert F. Crane | 2017-02-14 |
| 9512951 | Pipe slitting apparatus | Mark D. Randa, Robert F. Crane | 2016-12-06 |
| D359935 | Bicycle frame | — | 1995-07-04 |