Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6731200 | System for indicating the status of a hotel or similar room | Joerg Wagner, Charles Aitken | 2004-05-04 |
| 6236303 | System for indicating the status of a hotel or similar room | Joerg Wagner | 2001-05-22 |