Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847488 | Sabotage resistant light barrier wherein radiation is polarized into two opposite types of polarization | Kurt Muller | 1989-07-11 |
| 4740701 | Infrared intrusion detector | Walter Meier | 1988-04-26 |
| 4709152 | Infrared intrusion detector | Kurt Muller, Peter Gruber | 1987-11-24 |
| 4568924 | Method of and apparatus for signalling an alarm | Jurg Muggli, Andreas Scheidweiler | 1986-02-04 |