Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D361704 | Electronic instrument for removing security tags | Hans P. Witzky | 1995-08-29 |
| 5426419 | Security tag having arcuate channel and detacher apparatus for same | Thang Tat Nguyen, Hans P. Witzky, Norman B. Hansen | 1995-06-20 |
| D343368 | Anti-theft tag for clothing articles | Hans P. Witzky | 1994-01-18 |
| D343134 | Anti-theft tag for clothing articles | Hans P. Witzky | 1994-01-11 |
| D343135 | Anti-theft tag for clothing articles | Hans P. Witzky | 1994-01-11 |