Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5393582 | Enhanced crush strength construction multi-grade paperboard tubes | Yiming Wang, Terry Gerhardt, Charles G. Johnson | 1995-02-28 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5393582 | Enhanced crush strength construction multi-grade paperboard tubes | Yiming Wang, Terry Gerhardt, Charles G. Johnson | 1995-02-28 |