Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890246 | Electronic balance with calibrating system | Christian Oldendorf, Franz-Josef Melcher | 1989-12-26 |
| 4848477 | Electronic balance with electronic corner-load correction | Christian Oldendorf, Franz-Josef Melcher | 1989-07-18 |