Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4539244 | Honeycomb noise attenuation structure | Frank J. Riel, Dale W. R. Lawson | 1985-09-03 |
| 4384020 | Honeycomb noise attenuating structures | Frank J. Riel, D. W. R. Lawson | 1983-05-17 |
| 4379191 | Honeycomb noise attenuation structure | Frank J. Riel, D. W. R. Lawson | 1983-04-05 |
| 4254171 | Method of manufacture of honeycomb noise attenuation structure and the resulting structure produced thereby | Frank J. Riel, Dale W. R. Lawson | 1981-03-03 |