Wilhelm Hertfelder

Person

Steinenbronn, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Internal combustion engine, particularly Otto engine
- Patent number 5,056,309
- Issue date Oct 15, 1991
- Robert Bosch GmbH
- Ernst Linder
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Exhaust gas return control system for an internal combustion engine
- Patent number 4,646,705
- Issue date Mar 3, 1987
- Robert Bosch GmbH
- Rudolf Babitzka
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Valve arrangement, especially for controlling flow of hot water thr...
- Patent number 4,270,726
- Issue date Jun 2, 1981
- Robert Bosch GmbH
- Wilhelm Hertfelder
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Fluid flow control valve especially for use in heating installation...
- Patent number 4,251,052
- Issue date Feb 17, 1981
- Robert Bosch GmbH
- Wilhelm Hertfelder
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Pneumatically operated valve with a manually operated back-up displ...
- Patent number 4,180,234
- Issue date Dec 25, 1979
- Robert Bosch GmbH
- Wilhelm Hertfelder
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electrically motor driven and declutchable positioning device for a...
- Patent number 4,163,432
- Issue date Aug 7, 1979
- Robert Bosch GmbH
- Wilhelm Hertfelder
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Climate control for a motor vehicle compartment
- Patent number 4,143,706
- Issue date Mar 13, 1979
- Robert Bosch GmbH
- Eberhard Schnaibel
- B60 - VEHICLES IN GENERAL

Wilhelm Hertfelder

Person

Patents Grantslast 30 patents

Internal combustion engine, particularly Otto engine

Exhaust gas return control system for an internal combustion engine

Valve arrangement, especially for controlling flow of hot water thr...

Fluid flow control valve especially for use in heating installation...

Pneumatically operated valve with a manually operated back-up displ...

Electrically motor driven and declutchable positioning device for a...

Climate control for a motor vehicle compartment