Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669216 | Hydropneumatic suspension system | Andreas Braun, Manfred Heintschel, Wolfgang Zeitz | 2003-12-30 |
| 6474437 | Power-assisted steering with hydraulic power assistance | Andreas Braun, Wolfgang Zeitz | 2002-11-05 |
| 6450201 | Multiway turning valve | Falk Hofmann | 2002-09-17 |
| 6328323 | Actuator | — | 2001-12-11 |
| 6230839 | Power steering with hydraulic power assistance | Andreas Braun, Wolfgang Zeitz | 2001-05-15 |
| 5839527 | Multi-axle steering system for vehicles | Klaus Rief | 1998-11-24 |
| 5799259 | Vehicle with steerable front and rear wheels | Klaus Rief, Walter Kogel | 1998-08-25 |
| 5322142 | Hydraulic auxiliary power steering | — | 1994-06-21 |
| 5139106 | Auxiliary power steering system, especially for motor vehicles | Heinrich Holub | 1992-08-18 |
| 5138896 | Steering gear, especially for motor vehicles | Rudolf Schurr | 1992-08-18 |
| 5107752 | Rotary gate valve for hydraulic servo-assisted steering systems | Helmut Hetzel, Walter Kogel | 1992-04-28 |
| 5099939 | Multi-axle steering system | Walter Kogel | 1992-03-31 |
| 5086864 | Hydraulic auxiliary-power steering device | — | 1992-02-11 |
| 5086687 | Rotary slide valve for hydraulic auxiliary power steering | Helmut Hetzel, Walter Kogel | 1992-02-11 |
| 5080186 | Servo-assisted steering system for motor vechicles | Heinrich Holub, Rudolf Schurr | 1992-01-14 |
| 4848402 | Rotary slide valve for hydraulic auxiliary power steerings | Helmut Hetzel, Manfred Keller | 1989-07-18 |
| 4819757 | Power steering for motor vehicles | Friedemann Weiler | 1989-04-11 |
| 4614127 | Steering gear | — | 1986-09-30 |
| 4483237 | Steering gear with auxiliary power support | — | 1984-11-20 |
| 4442759 | Power booster unit | — | 1984-04-17 |
| 4421010 | Steering gear for motor vehicles | — | 1983-12-20 |
| 4421011 | Power steering system for motor vehicles | — | 1983-12-20 |
| 4417501 | Steering booster system | — | 1983-11-29 |
| 4373598 | Auxiliary steering for motor vehicles | — | 1983-02-15 |
| 4368794 | Auxiliary power steering for motor vehicles | Heinrich Holub | 1983-01-18 |