Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7538524 | Generators and transformers with toroidally wound stator winding | David L. Goulet, Donald S. Hofmann | 2009-05-26 |
| 5185549 | Dipole horn piezoelectric electro-acoustic transducer design | — | 1993-02-09 |