Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5032758 | Precision tubulation for self mounting lamp | John M. Davenport, Richard L. Hansler | 1991-07-16 |
| 4414634 | Fluid flow totalizer | Timothy Louis, Carl A. Gedeon, Eugene V. Erjavec | 1983-11-08 |
| 4369399 | Control circuit for a motor-driven door operator | Chun-Fu Chen | 1983-01-18 |
| 4369403 | Power factor controller for induction motor | — | 1983-01-18 |
| 4333046 | Power factor control of a three-phase induction motor | — | 1982-06-01 |
| 4323835 | Simplified power factor controller for induction motor | — | 1982-04-06 |
| 4304044 | Method for forming self-regulating heat trace cable | — | 1981-12-08 |
| 4287464 | Power factor controller for an induction motor using transistor switch means with variable breakdown voltage | John E. Keim | 1981-09-01 |
| 4271386 | Power factor controller for induction motor | — | 1981-06-02 |
| 4263536 | Control circuit for a motor-driven door operator | Chun-Fu Chen | 1981-04-21 |
| 4250400 | Flexible temperature self regulating heating cable | — | 1981-02-10 |
| 4232308 | Wireless alarm system | John E. Keim | 1980-11-04 |