Lars Douren

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Karlskoga, SE

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Patents Grantslast 30 patents

Information Patent Grant
Device for concentration and possible purification of mineral acids...
- Patent number 4,354,899
- Issue date Oct 19, 1982
- Aktiebolaget Bofors
- Hans Broberg
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Device for concentration of mineral acids, particularly sulphuric acid
- Patent number 4,269,655
- Issue date May 26, 1981
- Aktiebolaget Bofors
- Hans Broberg
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Device for an installation of a quartz tube in a device for concent...
- Patent number 4,243,477
- Issue date Jan 6, 1981
- Aktiebolaget Bofors
- Hans Broberg
- C01 - INORGANIC CHEMISTRY