Clark; Carl A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Clark; Carl A..The latest application filed is for "mine roof expansion anchor and bail element".
- Clark; Carl A. - Liverpool NY
- Clark; Carl A. - New York NY
| Patent | Date |
|---|---|
| Mine roof expansion anchor and bail element Grant 5,344,257 - Wright , et al. September 6, 1 | 1994-09-06 |
| Threaded fastener, method of fabrication thereof and method of supporting a mine roof using such a fastener Grant 5,282,698 - Wright , et al. February 1, 1 | 1994-02-01 |
| Mine roof expansion anchor Grant 5,094,577 - Clark , et al. March 10, 1 | 1992-03-10 |
| Mine roof expansion anchor shell and leaf Grant 5,011,337 - Clark , et al. * April 30, 1 | 1991-04-30 |
| Mine roof expansion anchor Grant 4,913,593 - Clark , et al. April 3, 1 | 1990-04-03 |
| Resin reinforced expansion anchor system Grant 4,764,055 - Clark , et al. August 16, 1 | 1988-08-16 |
| Method of supporting a mine roof using nut element with breakable portion Grant 4,662,795 - Clark , et al. May 5, 1 | 1987-05-05 |
| Resin reinforced expansion anchor and method of installation Grant RE31,776 - Clark , et al. December 25, 1 | 1984-12-25 |
| Rock bolt expansion anchor having windened expansion range Grant 4,403,894 - Clark September 13, 1 | 1983-09-13 |
| Resin reinforced expansion anchor and method of installation Grant 4,162,133 - Clark , et al. July 24, 1 | 1979-07-24 |
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