Robert L. Douglas

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Fort Wayne, IN, US

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Patents Grantslast 30 patents

Information Patent Grant
Parking brake lock-in key switch system for vehicle air brake system
- Patent number 6,234,586
- Issue date May 22, 2001
- Navistar International Transportation Corp.
- Richard B. Davis
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Parking brake lock-in key switch system for vehicle air brake system
- Patent number 6,007,159
- Issue date Dec 28, 1999
- Navistar International Transportation Corp.
- Richard B. Davis
- B60 - VEHICLES IN GENERAL