Morrell; Roger J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Morrell; Roger J..The latest application filed is for "shotgun cartridge rock breaker".
- Morrell; Roger J. - Bloomington MN
- Morrell; Roger J. - Blommington MN
| Patent | Date |
|---|---|
| Shotgun cartridge rock breaker Grant 5,474,364 - Ruzzi , et al. December 12, 1 | 1995-12-12 |
| Double acting bit holder Grant 5,335,977 - Morrell , et al. August 9, 1 | 1994-08-09 |
| Concave drag bit cutter device and method Grant 5,078,219 - Morrell , et al. January 7, 1 | 1992-01-07 |
| Microwave assisted hard rock cutting Grant 5,003,144 - Lindroth , et al. March 26, 1 | 1991-03-26 |
| Method of in situ mining Grant 4,249,777 - Morrell , et al. February 10, 1 | 1981-02-10 |
| In-situ leach mining method using branched single well for input and output Grant 4,222,611 - Larson , et al. September 16, 1 | 1980-09-16 |
| Square hole drill Grant 4,074,778 - Morrell , et al. February 21, 1 | 1978-02-21 |
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