Heinz Lendla

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Duisburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Composite underground fluid conduit of concrete and steel sections
- Patent number 4,241,762
- Issue date Dec 30, 1980
- Gutehoffnungshutte Sterkrade Aktiengesellschaft
- Heinz Link
- E21 - EARTH DRILLING MINING