Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853666 | Push button for an inductive value input keyboard | Oskar Zumkeller, Werner Schneider, Hans Grieser | 1989-08-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853666 | Push button for an inductive value input keyboard | Oskar Zumkeller, Werner Schneider, Hans Grieser | 1989-08-01 |