Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4647256 | Method and apparatus for producing underground pipes | Eberhard Beitinger | 1987-03-03 |
| 4308933 | Overhead sound attenuating cover for roadways and railways | Horst Widmann | 1982-01-05 |
| 4232822 | Method of and arrangement for correcting the height of railway upper structures | Werner Fastenau | 1980-11-11 |