Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5731700 | Quiescent power supply current test method and apparatus for integrated circuits | — | 1998-03-24 |
| 5666029 | Fluorescent emergency ballast self test circuit | — | 1997-09-09 |
| 5566936 | Electronic table tennis game | Joseph E. Newgarden | 1996-10-22 |
| 5144835 | Liquid level sensing device and methods of making and operating the same | — | 1992-09-08 |
| 5050431 | Liquid level sensing device and methods of making an operating the same | — | 1991-09-24 |
| 5004953 | Emergency lighting ballast for compact fluorescent lamps with integral starters | — | 1991-04-02 |
| 4952766 | Sensor and pop detector for microwave popcorn control | — | 1990-08-28 |
| 4937413 | Acoustic sensor assembly for a microwave oven | Fred T. Spruytenburg, Michael J. Hodgetts | 1990-06-26 |
| 4873409 | Closed-loop microwave popcorn control | Fred T. Spruytenburg, Michael J. Hodgetts | 1989-10-10 |
| 4870238 | Microwave oven popcorn control | Michael J. Hodgetts | 1989-09-26 |