Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6283451 | Hydraulic tensioner for mine roof support cables | John C. Stankus | 2001-09-04 |
| 6270290 | Tensionable cable bolt | John C. Stankus | 2001-08-07 |
| 6074134 | Tensionable cable bolt | John C. Stankus | 2000-06-13 |
| 5919006 | Tensionable cable bolt with mixing assembly | Frank Calandra, Jr., John C. Stankus, James J. Scott, Brian R. Castle, John G. Oldsen +1 more | 1999-07-06 |
| 5769570 | Cable tensioning dome plate | John C. Stankus, Eugene H. Stewart | 1998-06-23 |