Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D354058 | Dual-driver speaker | Jerry L. Bohannan, Thomas H. Tichy | 1995-01-03 |
| 4985926 | High impedance piezoelectric transducer | — | 1991-01-15 |
| 4447907 | Multiple mixer spread spectrum modulation and method therefor | John E. Bjornholt, Edward J. Groth, Jr. | 1984-05-08 |
| 4268410 | Polyether polyester surfactants, their production and uses | John J. Allan, Paul L. Leversidge | 1981-05-19 |