Metten Produktions-und Handels-GmbH

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Overath, DE

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Patents Grantslast 30 patents

Information Patent Grant
Concrete blocks having through holes for water drainage
- Patent number 5,400,561
- Issue date Mar 28, 1995
- Metten Produktions-und-Handel GmbH
- Josef Metten
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method and device for the fabrication of perforated blocks
- Patent number 5,397,228
- Issue date Mar 14, 1995
- Metten Produktions-und Handels-GmbH
- Josef Metten
- B28 - WORKING CEMENT, CLAY, OR STONE

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