Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6062245 | Gaseous fuel burner manifold with integral pressure regulator assembly | Eric J. Berglind, James Nonnie, Stefan John Szewczyk, Norman K. Peck, Donald M. Krueger | 2000-05-16 |
| 5650601 | Sealed switch assembly for use with a rotatable valve shaft | Donald M. Krueger | 1997-07-22 |
| 4402669 | Orthodontic safety headgear | — | 1983-09-06 |
| 4215983 | Orthodontic headgear appliance safety system | — | 1980-08-05 |