Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9656681 | Circuit arrangement for revealing light signal errors | Kay Koester | 2017-05-23 |
| 9562952 | Method and apparatus for revealing errors in the case of a light signal | Kay Koester | 2017-02-07 |