Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5421307 | Arrangement for controlling the temperature of the intake air of internal-combustion engines | Heinz Andress, Arthur Klotz, Herbert Seidl | 1995-06-06 |
| 4688511 | Dirt accumulation indicator for air intake filters | Paul M. Gerlach | 1987-08-25 |
| 4418662 | Engine air intake filter with fumes-absorbing substance | Walter Engler, Hans Erdmannsdorfer, Manfred Wagner | 1983-12-06 |