Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346547 | Method of making concrete electrically conductive for electromagnetic shielding purposes | — | 1994-09-13 |
| 5241132 | Electromagnetically shielded door | — | 1993-08-31 |
| 5239125 | EMI/RFI shield | Howard S. Savage | 1993-08-24 |
| 5153524 | Testing electromagnetic shielding effectiveness of shielded enclosures | — | 1992-10-06 |
| 4533834 | Optical fire detection system responsive to spectral content and flicker frequency | — | 1985-08-06 |
| 4450434 | Apparatus for determining break locations in fencing | Paul H. Nielsen | 1984-05-22 |
| 4397548 | Distance measuring system | — | 1983-08-09 |