Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4212681 | Method of accelerating the hardening and increasing the strength of Portland cement | Yordan T. Simeonov | 1980-07-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4212681 | Method of accelerating the hardening and increasing the strength of Portland cement | Yordan T. Simeonov | 1980-07-15 |