Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6368741 | Stopper plug for storage batteries | Josef Hackel, Norbert Maleschitz, Franz Zwingl | 2002-04-09 |
| 5988414 | Lid for containers, housings, bottles or similar structures | Robert Schwarz | 1999-11-23 |