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Ralf Roppelt
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Ludwigsburg, DE
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last 30 patents
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Patent Application
Mounting System for Photovoltaic Modules Having an Integrated Therm...
Publication number
20130167925
Publication date
Jul 4, 2013
Rikker Holzbau GmbH
Ralf Roppelt
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Patent Application
Device for conversion of energy
Publication number
20100223928
Publication date
Sep 9, 2010
Ralf Roppelt
B60 - VEHICLES IN GENERAL