Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5704510 | Top lock lid | Dirk G. Langer | 1998-01-06 |
| 5680951 | Flow control cover for a cup | Dirk G. Laner, Bernard Strong | 1997-10-28 |
| D372838 | Round coffee mug | Jan B. Zweig | 1996-08-20 |
| D370156 | Mug | Dirk G. Langer | 1996-05-28 |
| D368831 | Square coffee mug | Jan B. Zweig | 1996-04-16 |
| D333067 | Mug | — | 1993-02-09 |
| 5102000 | Drink Mug | — | 1992-04-07 |
| D302919 | Beverage mug | Dirk G. Langer | 1989-08-22 |
| D290568 | Insulated mug | Dirk G. Langer | 1987-06-30 |
| D277535 | Mug | Dick G. Langer | 1985-02-12 |