Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5939994 | Automatic surveillance device | Otto Meier, Peter Gruber | 1999-08-17 |
| 5568133 | Fire alarm | Hans Botschi, Peter Gruber | 1996-10-22 |
| 4582996 | Electrode insulating member for ionization fire alarm | Andreas Scheidweiler, Jurg Muggli | 1986-04-15 |
| 4352099 | Gas sensing unit for use in environment comprising explosive gases | Peter Christen, Hansheinrich Brandli, Arnim Sauerbrey | 1982-09-28 |
| 4189644 | Smoke detector ionization chamber | Wolfgang Schubert | 1980-02-19 |