Birkenbach; Alfred
Patent Applications and Registrations
Patent applications and USPTO patent grants for Birkenbach; Alfred.The latest application filed is for "hydraulic piston and process for its surface treatment".
- Birkenbach; Alfred - Hattersheim DE
| Patent | Date |
|---|---|
| Hydraulic piston and process for its surface treatment Grant 6,807,897 - Birkenbach , et al. October 26, 2 | 2004-10-26 |
| Hydraulic piston and process for its surface treatment App 20020104434 - Birkenbach, Alfred ; et al. | 2002-08-08 |
| Anti-lock brake system for automotive vehicles Grant 5,167,441 - Schonlau , et al. December 1, 1 | 1992-12-01 |
| Pressurized fluid supplying arrangement particularly a master cylinder of a clutch Grant 4,566,277 - Birkenbach January 28, 1 | 1986-01-28 |
| Load-responsive braking pressure control device especially for vehicle brake systems Grant 4,469,378 - Birkenbach September 4, 1 | 1984-09-04 |
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