Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4476657 | Precast concrete structural units and burial vaults | Michael J. V. Giessen | 1984-10-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4476657 | Precast concrete structural units and burial vaults | Michael J. V. Giessen | 1984-10-16 |