Georg Onderka

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic system for opening and closing hopper barges
- Patent number 4,091,715
- Issue date May 30, 1978
- Deggendorfer Werft und Eisenbau G.m.b.H.
- Georg Onderka
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT