Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5627362 | Portable light source unit for simulating fires having an adjustable aperture | Robert C. Youngquist, James Strobel | 1997-05-06 |
| 5561290 | Optical detector calibrator system | James Strobel, Robert C. Youngquist | 1996-10-01 |
| 5412221 | Particle fallout/activity sensor | Ihlefeld M. Curtis, Robert C. Youngquist, Kenneth Rose | 1995-05-02 |