Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4606219 | Gas detectors | Ernest Van Eeden, Nicolaas T. van der Walt | 1986-08-19 |
| 4467895 | Slack rope detecting apparatus | Ernest B. Smith, Phillipus D. Slabbert, Peter C. Vickers | 1984-08-28 |
| 4459583 | Alarm system | Nicolaas T. van der Walt | 1984-07-10 |
| 4423411 | Ionization type fire detector | Nicolaas T. van der Walt, Timothy J. Newington | 1983-12-27 |
| 4309663 | Rate of change detection | Jacobus P. Van Wyk | 1982-01-05 |
| 4290021 | Battery testing method and device | Jacob Johannes Theron, Jacobus P. Van Wyk, Michael D. De Lange | 1981-09-15 |