Richard Zechnall

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Stuttgart, DT

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus repetitively controlling the composition of exhaust emiss...
- Patent number 4,040,394
- Issue date Aug 9, 1977
- Robert Bosch GmbH
- Josef Wahl
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Injection control system for an internal combustion engine
- Patent number 3,990,412
- Issue date Nov 9, 1976
- Robert Bosch GmbH
- Richard Zechnall
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Polarized light beam source in a vehicle headlight
- Patent number 3,935,444
- Issue date Jan 27, 1976
- Robert Bosch GmbH
- Richard Zechnall
- G02 - OPTICS