Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4325458 | Apparatus for reducing the exhaust noise of internal combustion engines or the like | Eckehard Laudien | 1982-04-20 |
| 4325461 | Noise reducing resonators, or so-called silators | — | 1982-04-20 |