Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11904499 | Device for producing concrete blocks | Bernhard Klöppner, Bernd Büttner | 2024-02-20 |
| 11364655 | Device for producing concrete blocks | Bernhard Klöppner, Bernd Büttner | 2022-06-21 |
| 7048250 | Method for producing purpose-made blocks, a device therefor and a purpose-made block | — | 2006-05-23 |