Showing 1–14 of 14 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Michael B. Woodhall | Shop Vac | 3 |
| 2 | Carl Frederick Wilhelm Supra | — | 2 |
| 2 | Clive W. Hunt | The Steel Engineering Company Limited | 2 |
| #4 | Pieter John A. Hickley | — | 1 |
| #4 | Christiaan B. Lategan | — | 1 |
| #4 | Bertram P. Rothschild | — | 1 |
| #4 | Michael A. Minks | — | 1 |
| #4 | John R. Van Niekerk | — | 1 |
| #4 | Alfred E. Hawkrige | — | 1 |
| #4 | Eberhard W. Neuse | — | 1 |
| #4 | Brian Casey | — | 1 |
| #4 | Nigel I. Anderson | — | 1 |
| #4 | Nicolaas T. van der Walt | Crucible | 1 |
| #4 | Garth J. M. Barrett | — | 1 |