Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835014 | Method for imparting water repellency to absorbent inorganic building materials | Michael Roth | 1989-05-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835014 | Method for imparting water repellency to absorbent inorganic building materials | Michael Roth | 1989-05-30 |