Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4233012 | Bias stretching apparatus for imitation-leather | Charles M. Willwerth | 1980-11-11 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4233012 | Bias stretching apparatus for imitation-leather | Charles M. Willwerth | 1980-11-11 |