Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10618142 | Two piece spindle fixture | — | 2020-04-14 |
| 5579596 | Adjustable frame | Sandor Janoskuti, Nathanael Nichols | 1996-12-03 |
| 5450663 | Method for fabricating a truss member for a mine roof support | Frank Calandra, Jr., Jerry E. Frease, John C. Stankus, Eugene H. Stewart | 1995-09-19 |
| 5302056 | Method and apparatus for supporting a mine roof | Frank Calandra, Jr., Jerry E. Frease, John C. Stankus, Eugene H. Stewart | 1994-04-12 |