Sigrid Hafner

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Stuttgart, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of detecting combustion misfires by evaluating RPM fluctuations
- Patent number 5,875,411
- Issue date Feb 23, 1999
- Robert Bosch GmbH
- Asmus Volkart
- G01 - MEASURING TESTING
Information Patent Grant
Method of detecting misfires in a multicylinder internal combustion...
- Patent number 5,726,352
- Issue date Mar 10, 1998
- Robert Bosch GmbH
- Manfred Mezger
- G01 - MEASURING TESTING
Information Patent Grant
Method for detecting misfires in an internal combustion engine
- Patent number 5,522,258
- Issue date Jun 4, 1996
- Robert Bosch GmbH
- Sigrid Hafner
- G01 - MEASURING TESTING