David E. Ewel

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Mankato, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Trailer break-away switch
- Patent number 10,160,428
- Issue date Dec 25, 2018
- DEWEL, LLC
- David E. Ewel
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electronically controlled full power brake valve
- Patent number 6,866,348
- Issue date Mar 15, 2005
- Mico, Inc.
- David E. Ewel
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
TRAILER BREAK-AWAY SWITCH
- Publication number 20170225665
- Publication date Aug 10, 2017
- Dewel, LLC
- David E. Ewel
- B60 - VEHICLES IN GENERAL
Information Patent Application
Electronic pedal assembly and method
- Publication number 20060053957
- Publication date Mar 16, 2006
- David E. Ewel
- B60 - VEHICLES IN GENERAL
Information Patent Application
Electronically controlled full power brake valve
- Publication number 20020145332
- Publication date Oct 10, 2002
- David E. Ewel
- B60 - VEHICLES IN GENERAL