Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844204 | Procedure for modernizing the control system of a lift | Ralf Ekholm | 1989-07-04 |
| 4797675 | Procedure for counting moving objects as they stop | — | 1989-01-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844204 | Procedure for modernizing the control system of a lift | Ralf Ekholm | 1989-07-04 |
| 4797675 | Procedure for counting moving objects as they stop | — | 1989-01-10 |