Holdcroft; Robert James
Patent Applications and Registrations
Patent applications and USPTO patent grants for Holdcroft; Robert James.The latest application filed is for "mining method".
- Holdcroft; Robert James - Johannesburg ZA
| Patent | Date |
|---|---|
| Mining method Grant 8,342,609 - Holdcroft , et al. January 1, 2 | 2013-01-01 |
| Borehole condition monitors Grant D644,948 - Dreyer , et al. September 13, 2 | 2011-09-13 |
| Mining method App 20110006585 - Holdcroft; Robert James ; et al. | 2011-01-13 |
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