Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4280848 | Sag resistant mortar compositions | Jeffrey R. Ellis | 1981-07-28 |
| 4211572 | Dry-set mortars and method for improving the water retentivity thereof | Jeffrey R. Ellis | 1980-07-08 |