Issued Patents All Time
Showing 76–100 of 107 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819997 | Slip-controlled brake system | Helmut Steffes | 1989-04-11 |
| 4815793 | Hydraulic brake system for automotive vehicles | Helmut Steffes | 1989-03-28 |
| 4811809 | Traction slip control device | Helmut Steffes, Joachim Maas, Thomas Schwarz | 1989-03-14 |
| 4805966 | Slip-control hydraulic brake booster with braking-pressure responsive valve for fast-fill cylinder | Helmut Steffes | 1989-02-21 |
| 4804236 | Hydraulic brake system with anti-skid control and/or traction slip control | Jochen Burgdorf, Lutz Weise, Hans-Albert Beller | 1989-02-14 |
| 4790608 | Skid-controlled brake system with master cylinder pistons and with plungers supported on stationary transverse member | Jochen Burgdorf | 1988-12-13 |
| 4779937 | Hydraulic brake system provided with a wheel slip control | Jochen Burgdorf | 1988-10-25 |
| 4769554 | Electrical switching mechanism for circuits in automotive vehicles | Helmut Steffes | 1988-09-06 |
| 4759591 | Hydraulic brake system | Helmut Steffes | 1988-07-26 |
| 4736995 | Brake slip control apparatus fed with auxiliary energy for use in a vehicular hydraulic brake system | Helmut Steffes, Hajo Pickel | 1988-04-12 |
| 4736993 | Hydraulic brake system with slip control for automotive vehicles | Helmut Steffes | 1988-04-12 |
| 4693083 | Vacuum brake force booster | — | 1987-09-15 |
| 4687259 | Hydraulic brake system with slip control | Helmut Steffes | 1987-08-18 |
| 4674804 | Hydraulic brake system | Jochen Burgdorf | 1987-06-23 |
| 4662688 | Vehicle hydraulic brake system | — | 1987-05-05 |
| 4659152 | Hydraulic brake system with slip control | Helmut Steffes | 1987-04-21 |
| 4643489 | Hydraulic brake system with slip control | Helmut Steffes | 1987-02-17 |
| 4643488 | Hydraulic vehicle servo brake | — | 1987-02-17 |
| 4628162 | Fluid level indicator for a reservoir | Helmut Steffes | 1986-12-09 |
| 4564244 | Pressure control device | Helmut Steffes | 1986-01-14 |
| 4505113 | Plastic compensating reservoir for hydraulic brake systems | Waldemar Vatter | 1985-03-19 |
| 4444052 | Compensating brake fluid reservoir | Waldemar Vatter, Peter Hinze | 1984-04-24 |
| 4427239 | Dual-circuit pressure control valve | Bernd Schopper | 1984-01-24 |
| 4416490 | Pressure control valve for a hydraulic brake system | — | 1983-11-22 |
| 4414810 | Fluid reservoir for a hydraulic brake system | Magdalene Buerger | 1983-11-15 |