Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877453 | Process of pretreating a pozzolanic material for increasing the pozzolanic properties of said material | — | 1989-10-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877453 | Process of pretreating a pozzolanic material for increasing the pozzolanic properties of said material | — | 1989-10-31 |