Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867374 | Paperboard drinking cup | Frederick Wyss | 1989-09-19 |
| 4854474 | Composite drinking cup | Frederick Wyss | 1989-08-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867374 | Paperboard drinking cup | Frederick Wyss | 1989-09-19 |
| 4854474 | Composite drinking cup | Frederick Wyss | 1989-08-08 |