Theodor Kolk

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Haltern-Sythen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Support for underground mining and tunnel construction
- Patent number 6,056,480
- Issue date May 2, 2000
- Theodor Kolk
- E21 - EARTH DRILLING MINING
Information Patent Grant
Prop for use in underground mining or tunnel construction
- Patent number 5,921,718
- Issue date Jul 13, 1999
- Theodor Kolk
- E21 - EARTH DRILLING MINING