Jan G. J. van der Laan

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Warnsveld, NL

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Patents Grantslast 30 patents

Information Patent Grant
Mixer for drill cuttings and drilling mud on a drilling location
- Patent number 4,516,860
- Issue date May 14, 1985
- Hosokawa-Nauta B.V.
- Jan G. J. van der Laan
- E21 - EARTH DRILLING MINING