Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6592296 | Sealing assembly for tunnel construction sections | Holger Gutschmidt, Heiko Hoft | 2003-07-15 |
| 6575664 | Sealing arrangement | Werner Degel, Holger Gutschmidt | 2003-06-10 |
| 6506226 | Hard metal or cermet body and method for producing the same | Limin Chen, Walter Lengauer, Hans Werner Daub, Klaus Dreyer, Jose Luis GARCIA +1 more | 2003-01-14 |