Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667684 | Remote controlled garage door opening system | Willem J. Marneweck, Vivien Delport, Frederick Johannes Bruwer | 2003-12-23 |
| 6118243 | Door operator system | Brett A. Reed, Gregory E. Williams, Robert C. Kass | 2000-09-12 |
| 6049289 | Remote controlled garage door opening system | Willem J. Marneweck, Vivien Delport, Frederick Johannes Bruwer | 2000-04-11 |
| 5455733 | Contact status monitor | — | 1995-10-03 |
| 5450841 | Multi-function remote control system for gas fireplace | Louis G. Whitaker | 1995-09-19 |
| 5428923 | Fail safe obstruction detector for door operators and door operator system incorporating such detector | — | 1995-07-04 |
| 5384495 | Wiring error detector for door operator | Louis G. Whitaker | 1995-01-24 |
| 4922168 | Universal door safety system | Louis G. Whitaker | 1990-05-01 |