Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5273087 | Vapor recovery nozzle with flow indicators | Wolfgang Koch, Dennis J. Strock, Harry B. Hartman, Michael S. Butkovich, Charles M. Daul +1 more | 1993-12-28 |
| D341595 | Fuel dispenser handle | Dennis J. Strock, Harry B. Hartman, Wolfgang Koch | 1993-11-23 |
| 5244017 | Fuel and vapor flow signaling process | Harry B. Hartman, Wolfgang Koch, Dennis J. Strock | 1993-09-14 |
| D338210 | Fuel dispenser handle | Dennis J. Strock, Michael S. Butkovich, Wolfgang Koch | 1993-08-10 |
| D317969 | Fuel dispensing nozzle with sight flow indicator | — | 1991-07-02 |