Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4749431 | Process for producing molds, models and tools based on hard gypsum and/or cement | Neville H. Clubbs, Siegmund Stadler | 1988-06-07 |
| 4234345 | Method for producing hard plaster of paris | — | 1980-11-18 |