Sigfred K. Nielsen

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Valby, DK

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Patents Grantslast 30 patents

Information Patent Grant
Flexible air supply connection in a grate cooler
- Patent number 5,584,686
- Issue date Dec 17, 1996
- F. L. Smidth & Co. AS
- Sigfred K. Nielsen
- F27 - FURNACES KILNS OVENS RETORTS