Voest-Alpine Maschinenbau Gesellshaft m.b.H.

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Railway switch comprising a frog having a movable main point and au...
- Patent number 4,953,814
- Issue date Sep 4, 1990
- Voest-Alpine Maschinenbau Gesellshaft m.b.H.
- Johannes R. Oswald
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES