Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7091670 | Safety interlock apparatus and method | Henry Frazier Pruett | 2006-08-15 |
| 6853152 | Electric power supply safety interlock system | Henry Frazier Pruett | 2005-02-08 |
| 6424097 | Projection lamp safety interlock apparatus and method | Henry Frazier Pruett | 2002-07-23 |
| 5793352 | Source coupler for multimedia projection display system | Robert Y. Greenberg, Jorell A. Olson, Mark Schoening | 1998-08-11 |
| 5719463 | Retaining spring and stop means for lamp mount | Martin N. Hassink | 1998-02-17 |
| 5594294 | Lamp assembly with a resilient retaining lamp mount structure | John J. Cowling, D. Aaron Crites, Dale K. Mikol | 1997-01-14 |
| 5479102 | Simulated load circuit for simulating the arc impedance of an electrodless discharge lamp | Sayed-Amr El-Hamamsy, Michael M. Secen, Mark E. Duffy | 1995-12-26 |
| 5332970 | Method for measuring the impedance of an electrodeless arc discharge lamp | Sayed-Amr El-Hamamsy, Michael M. Secen, Mark E. Duffy | 1994-07-26 |
| 5204578 | Heat sink means for metal halide lamp | Timothy P. Dever, Gary R. Allen, John M. Davenport | 1993-04-20 |
| 5107165 | Initial light output for metal halide lamp | Timothy P. Dever, Gary R. Allen, John M. Davenport | 1992-04-21 |