Bengt J. F. Norrman

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Helsinki, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method and device providing mobility to a contact shoe independent...
- Patent number 4,458,352
- Issue date Jul 3, 1984
- Outokumpu Oy
- Frans H. Tuovinen
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of mixing a hot furnace gas with another gas before the remo...
- Patent number 4,443,878
- Issue date Apr 17, 1984
- Outokumpu Oy
- Frans H. Tuovinen
- F27 - FURNACES KILNS OVENS RETORTS