Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12246990 | Filler made from sorted waste materials for the production of cement-bound shaped bodies | Peter Merkel, Martin Dreismann | 2025-03-11 |
| 4465442 | Rotary piston pump with pressure equalization chambers for the shaft split seals | Hermann Lang | 1984-08-14 |