Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363667 | Cementitious composition and cement produced therefrom | James D. Birchall, Anthony Howard | 1982-12-14 |
| 4353746 | Hydraulic cement composition | James D. Birchall, Anthony Howard | 1982-10-12 |
| 4353747 | Hydraulic cement composition | James D. Birchall | 1982-10-12 |
| 4353748 | Cementitious product | James D. Birchall, Anthony Howard | 1982-10-12 |