Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9670668 | Masonry system | — | 2017-06-06 |
| 7935284 | Method for fabricating concrete blocks or concrete slabs | — | 2011-05-03 |
| D547882 | Cast stone | — | 2007-07-31 |
| 6471895 | Method for the fabrication of concrete blocks or concrete slabs | — | 2002-10-29 |
| 5133915 | Process for the production and treatment of concrete blocks | Josef Metten | 1992-07-28 |