Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5186217 | Fluid-impervious structure and method of making same | Dietmar Kallinich, Wolfgand Kahlert, Friedrich Lehmann | 1993-02-16 |
| 5127771 | Narrow or slotted wall which is introduced into a substratum and sealing wall composition contained therein | — | 1992-07-07 |