Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| H1357 | Active sound cancellation system for time-varying signals | Henry A. Leinhos | 1994-09-06 |
| H1317 | Ring damper for structureborne noise suppression in piping systems | — | 1994-06-07 |