Fritz Petersen

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Grefrath, DT

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Patents Grantslast 30 patents

Information Patent Grant
Furnace installation operated by direct electrical heating accordin...
- Patent number 3,989,883
- Issue date Nov 2, 1976
- Elektroschmelzwerk Kempten GmbH
- Gunter Wiebke
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Collector apparatus for gaseous reaction products
- Patent number 3,976,829
- Issue date Aug 24, 1976
- Elektroschmelzwerk Kempten GmbH
- Gunter Wiebke
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Furnace installation operated by direct electrical heating accordi...
- Patent number 3,950,602
- Issue date Apr 13, 1976
- Elektroschmelzwerk Kempten GmbH
- Andreas Korsten
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR