Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE42095 | Method for transferring utility optical signals and optical-line network | Jan Koeppen, Helmut Tiltmann | 2011-02-01 |
| 6947668 | Method for transferring utility optical signals and optical-line network | Jan Koeppen, Helmut Tiltmann | 2005-09-20 |
| 6583898 | Optical transmission device and method for checking transmission in an optical transmission device | Jan Koeppen, Hans Henrik Lausen, Lutz Bersiner | 2003-06-24 |
| 4873879 | Variable speed transmission | Roger P. Butterfield, Curt A. Wykstra | 1989-10-17 |
| 4515255 | Hydraulic control system for a clutch and transmission | William J. Haley | 1985-05-07 |