Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4346293 | Optical electronic distance sensor with a parallel beam of light and adjustable detector-emitter separation | — | 1982-08-24 |
| 4339660 | Reflection light barrier apparatus for recognizing both strongly and weakly reflecting objects | Karl O. Buchholz, Jurgen Erdmann | 1982-07-13 |
| 4310756 | Light grid arrangement using cyclically switched semiconductor light sources | Erwin Sick | 1982-01-12 |