Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7715727 | System and method for transmitting analog signals with a modulating retroreflector and hybrid amplitude and frequency modulation | William S. Rabinovich, G Charmaine Gilbreath, Peter G. Goetz | 2010-05-11 |
| 6039151 | Backup apparatus for a hydraulic elevator brake control | Cary J. Ringel | 2000-03-21 |
| 5900596 | Hydraulic brake controller | John W. Koshak, Paul L. Baldwin, Tony S. Huen | 1999-05-04 |
| 5726399 | Apparatus for scanning elevator call buttons | — | 1998-03-10 |
| 5434377 | Pushbuttton electrical switch assembly | Adolf H. Martin | 1995-07-18 |
| 5433295 | Indicating element for elevators | — | 1995-07-18 |
| 5391848 | Push button switch illuminated by light emitting diodes for use with elevators | — | 1995-02-21 |
| D291068 | Sports timer | Charles Jones, Kenneth Burks | 1987-07-28 |
| 4637732 | Hand held athletic officiating timers | Charles Jones, Kenneth Burks | 1987-01-20 |