Leif H. A. Larsen

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Svenstrup Jylland, DK

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Patents Grantslast 30 patents

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Acid resistant concrete articles, especially sulfur concrete pipes,...
- Patent number 4,981,740
- Issue date Jan 1, 1991
- KKKK A/S
- Leif H. A. Larsen
- B28 - WORKING CEMENT, CLAY, OR STONE