David M. Tetzlaff

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Patents Grantslast 30 patents

Information Patent Grant
Double-acting suspension axle assembly for heavy load transporters
- Patent number 8,991,832
- Issue date Mar 31, 2015
- Doefer Companies
- David M. Tetzlaff
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
DOUBLE-ACTING SUSPENSION AXLE ASSEMBLY FOR HEAVY LOAD TRANSPORTERS
- Publication number 20130302122
- Publication date Nov 14, 2013
- DOERFER COMPANIES
- David M. Tetzlaff
- B60 - VEHICLES IN GENERAL