Bertram Dupuis

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Ludwigsburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Glow plug having cobalt/iron alloy regulating filament
- Patent number 5,093,555
- Issue date Mar 3, 1992
- BERU Ruprecht GmbH & Co. KG
- Bertram Dupuis
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Glow plug having a series connection of resistant filaments
- Patent number 5,091,631
- Issue date Feb 25, 1992
- BERU Ruprecht GmbH & Co. KG
- Bertram Dupuis
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS