Ralf Walter

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Augsburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Ballast-free permanent rail way having recessed tie with central fa...
- Patent number 5,435,486
- Issue date Jul 25, 1995
- Walter Bau-Aktiengesellschaft
- Rudolf Gerlach
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES