Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4628819 | Disintegrating tamper mass | Joseph E. Backofen, James A. Petrousky, Donald J. Butz, Ernest C. Faccini, Arleigh E. McCree | 1986-12-16 |
| 4456789 | Audio teleconferencing | Ian S. Groves, David R. Guard, John G. Bunting, Christopher E. Rowlands, Edwin J. Powter +1 more | 1984-06-26 |