Walter Topfer

Follow

Person

Iptingen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Internal-combustion engine comprising an intake system
- Patent number 5,623,900
- Issue date Apr 29, 1997
- Dr. Ing. h.c.F. Porsche AG
- Walter Topfer
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Internal-combustion engine comprising an intake system
- Patent number 5,603,295
- Issue date Feb 18, 1997
- Ing. h.c.F. Porsche AG
- Walter Topfer
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Intake system for an internal-combustion engine
- Patent number 5,537,965
- Issue date Jul 23, 1996
- Dr. Ing. h.c.F. Porsche, AG
- Walter Topfer
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Crankcase ventilation system
- Patent number 4,922,882
- Issue date May 8, 1990
- Dr. Ing. h.c.F. Porsche AG
- Walter Topfer
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS