Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12392102 | Construction machine, displacement tube and method for creating a filling material column in the ground | Michael Seifert, Bernhard Karmann, Herbert Karl | 2025-08-19 |
| 6666254 | Method for the uphill casting of cast pieces in sand moulds with controlled solidification | Norbert Demarczyk | 2003-12-23 |