Herbert E. Krenchel

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Copenhagen-Hellerup, DK

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Patents Grantslast 30 patents

Information Patent Grant
Fiber reinforced building products and method of producing same
- Patent number 4,261,754
- Issue date Apr 14, 1981
- Dansk Eternit-Fabrik A/S
- Herbert E. Krenchel
- B28 - WORKING CEMENT, CLAY, OR STONE