Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7745999 | Lamp which is closed on two sides | Jurgen Graf, Andreas Hohlfeld, Anton Schogl, Karen Twesten | 2010-06-29 |
| 7253562 | Lamp which is closed on two sides | Jurgen Graf, Andreas Hohlfeld, Anton Schlögl, Karen Twesten | 2007-08-07 |
| 7221098 | Electric lamp with outer bulb and associated support body | Jurgen Graf, Andreas Hohlfeld, Anton Schlögl, Karen Twesten | 2007-05-22 |
| 7112116 | Process for producing an electric lamp with outer bulb | Jurgen Graf, Andreas Hohlfeld, Anton Schlögl, Karen Twesten | 2006-09-26 |