Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5307793 | Microphone signal attenuating apparatus for oxygen masks | Gary Sinclair, Michael Brumley, Tom McDonald | 1994-05-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5307793 | Microphone signal attenuating apparatus for oxygen masks | Gary Sinclair, Michael Brumley, Tom McDonald | 1994-05-03 |