Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE32673 | Process for the production of calcium silicate-containing stone blanks useful in constructing building walls | Peter Schubert, Hermann Pfeifer, Volker Hermann, Eckhard Schulz | 1988-05-24 |
| 4456449 | Apparatus for the production of calcium silicate-containing stone blanks useful in constructing building walls | Peter Schubert, Hermann Pfeifer, Volker Hermann, Eckhard Schulz | 1984-06-26 |
| 4376086 | Process for the production of calcium silicate-containing stone blanks useful in constructing building walls | Peter Schubert, Hermann Pfeifer, Volker Hermann, Eckhard Schulz | 1983-03-08 |