Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4718838 | Autocutting extrusion machine for producing prestressed concrete cored articles | Lu Yonghong | 1988-01-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4718838 | Autocutting extrusion machine for producing prestressed concrete cored articles | Lu Yonghong | 1988-01-12 |