Steyn; Johann
Patent Applications and Registrations
Patent applications and USPTO patent grants for Steyn; Johann.The latest application filed is for "rock bolt".
- Steyn; Johann - Germiston N/A ZA
- Steyn; Johann - Sasolburg ZA
| Patent | Date |
|---|---|
| Rock bolt Grant 8,876,436 - Steyn November 4, 2 | 2014-11-04 |
| Rock bolt Grant 8,801,336 - Steyn August 12, 2 | 2014-08-12 |
| Rock bolt and rock bolt component Grant 8,696,249 - Steyn April 15, 2 | 2014-04-15 |
| Rock Bolt App 20130156510 - Steyn; Johann | 2013-06-20 |
| Rock Bolt App 20130149042 - Steyn; Johann | 2013-06-13 |
| Rock Bolt And Rock Bolt Component App 20130149041 - Steyn; Johann | 2013-06-13 |
| Grout Delivery System For A Rock Bolt App 20120177448 - Steyn; Johann ; et al. | 2012-07-12 |
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