Issued Patents 1989
Showing 1–1 of 1 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 |
Showing 1–1 of 1 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 |