Frank Engl

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Alsdorf, DE

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Patents Grantslast 30 patents

Information Patent Grant
Device for opening or closing an opening, in particular a bottom op...
- Patent number 7,156,371
- Issue date Jan 2, 2007
- Z&J Technologies GmbH
- Frank Engl
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
Device for opening or closing an opening, in particular a bottom op...
- Publication number 20040262324
- Publication date Dec 30, 2004
- Frank Engl
- C21 - METALLURGY OF IRON