Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6434861 | Apparatus for backfilling | — | 2002-08-20 |
| 5440290 | Proximity detection device for protection of personnel against exposure to hazardous radio frequency radiation | Roy D. Follendore, III | 1995-08-08 |
| 5432851 | Personal computer access control system | Edward M. Scheidt, C. Jay Wack | 1995-07-11 |
| 5353529 | Apparatus for backfilling | — | 1994-10-11 |