Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849701 | Method of testing the function of load resistors connected in parallel | Dieter Borgmann | 1989-07-18 |
| 4831909 | Apparatus for slitting a web into narrow webs or strips | Rudolf Peters | 1989-05-23 |