Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4926395 | Method and system for measuring sound velocity | Carl D. Lowenstein, Fred N. Spiess | 1990-05-15 |
| 4214314 | Precision transponder and method of communicating therewith | Frederick N. Spiess, Frank V. Pavlicek, Carl D. Lowenstein | 1980-07-22 |