Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6078145 | Synchronous two wire multiple strobe autotrigger control circuit | Sean Tillinghast | 2000-06-20 |
| 5736925 | Vehicle warning system controller | Terry Dawson | 1998-04-07 |
| 4958143 | Synchronized pulse-enhanced dual light source | — | 1990-09-18 |
| RE31667 | Low cost electromechanical electronic simulation circuits | — | 1984-09-11 |
| 4465949 | Electromechanical frequency generator-modulator kinetic storage device | — | 1984-08-14 |
| 4383244 | Pseudo multi light display device and generator therefor | — | 1983-05-10 |
| 4327518 | Inertial device for sight and sound effects in rotating apparatus | — | 1982-05-04 |
| 4274225 | Model with two-pole motor actuated siren and flashing lights | David Fisher, Kenneth Douglas Johnson, Darrell B. Zipp, Frederick W. John | 1981-06-23 |
| 4271378 | Toy with reversible driven hoist | — | 1981-06-02 |
| 4260939 | Low cost electromechanical electronic simulation circuits | — | 1981-04-07 |
| 4238755 | Simplified linear potentiometer | — | 1980-12-09 |