Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9607193 | Enhanced identification system | Mario Alphonso Marais, Hendrik Van Zyl Smit | 2017-03-28 |
| 8872631 | Enhanced identification system | Mario Alphonso Marais, Hendrik Van Zyl Smit | 2014-10-28 |
| 7053755 | Enhanced identification system | Mario Alphonso Marais, Hendrik Van Zyl Smit | 2006-05-30 |
| 6784787 | Identification system | Mario Alphonso Marais, Hendrik Van Zyl Smit | 2004-08-31 |
| 6661336 | Enhanced identification system | Mario Alphonso Marais, Hendrik Van Zyl Smit | 2003-12-09 |
| 5406890 | Timing apparatus | Michael J. C. Marsh, Trevor M. Hodson | 1995-04-18 |
| 5353009 | Communication system | Michael J. C. Marsh, Trevor M. Hodson | 1994-10-04 |
| 5282421 | Timing apparatus | Michael J. C. Marsh, Trevor M. Hodson | 1994-02-01 |
| 5189246 | Timing apparatus | Michael J. C. Marsh, Trevor M. Hodson | 1993-02-23 |
| 4796531 | Mining method | Stafford A. Smithies | 1989-01-10 |