Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1084229 | Venturi signal amplifier | — | 2025-07-15 |
| D960321 | Venturi signal amplifier | — | 2022-08-09 |
| 8286937 | Tubular valve device | — | 2012-10-16 |
| 7347221 | Solenoid valve | Siegfried Berger | 2008-03-25 |
| 6814339 | Coaxial solenoid valve | Siegfried Berger | 2004-11-09 |
| 5138292 | Encapsulated apparatus | — | 1992-08-11 |
| 4950871 | Arrangement for heating rooms uniformly trough the equalization of the temperature distribution between the ceiling and the floor regions | Walter Pollak | 1990-08-21 |