| 10758329 |
Hydrating mouth guard |
— |
2020-09-01 |
| 6296429 |
Mine roof tension nut having improved frangible qualities |
— |
2001-10-02 |
| 5599140 |
Mine roof support system including an expansion anchor with means assisting resin component mixing and method of installation thereof |
— |
1997-02-04 |
| 5501551 |
Mine roof expansion anchor, expansible shell element used therein and method of installation |
— |
1996-03-26 |
| 5352066 |
Mine roof/bolt anchor assembly and method of installation thereof |
Charles W. Schaeffer |
1994-10-04 |
| 5344257 |
Mine roof expansion anchor and bail element |
Carl A. Clark |
1994-09-06 |
| 5316414 |
Mine roof expansion anchor, tapered plug element used therein and method of installation |
— |
1994-05-31 |
| 5282698 |
Threaded fastener, method of fabrication thereof and method of supporting a mine roof using such a fastener |
Carl A. Clark |
1994-02-01 |
| 5275512 |
Mine roof expansion anchor and bail member therefor |
— |
1994-01-04 |
| 5222835 |
Resin-mixing article for mine roof anchor |
— |
1993-06-29 |
| 5219248 |
Mine roof expansion anchor with improved bore hole engagement means and method of installation thereof |
— |
1993-06-15 |
| 5098227 |
Tubular retainer for mine roof expansion anchor and method of use |
— |
1992-03-24 |
| 5094577 |
Mine roof expansion anchor |
Carl A. Clark |
1992-03-10 |
| 5064311 |
Mine roof support structure and method |
Roger Giroux |
1991-11-12 |
| 5033910 |
Mechanical expansion anchor shell |
— |
1991-07-23 |
| 5011337 |
Mine roof expansion anchor shell and leaf |
Carl A. Clark |
1991-04-30 |
| 4913593 |
Mine roof expansion anchor |
Carl A. Clark |
1990-04-03 |
| 4764055 |
Resin reinforced expansion anchor system |
Carl A. Clark |
1988-08-16 |
| 4707900 |
Cylinder liner sleeve puller |
Rodney L. Twogood, Roger D. Rawle |
1987-11-24 |
| 4618291 |
Nut member and mine roof support system incorporating same |
— |
1986-10-21 |
| 4516886 |
Combined resin-mechanical mine roof support anchor |
— |
1985-05-14 |