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Books by Deutsches Patentamt

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2 books found
Index to patent classification of the German Federal Republic (StichwForterverzeichnis) : an alphabetical index by key-words of subject matter pertaining to useful arts with the relevant patent classes, subclasses, groups, and subgroups
Index to patent classification of the German Federal Republ…
By: Deutsches Patentamt
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Blatt Fur Patent-, Muster- Und Zeichenwesen, Volume 8 (German Edition)
Blatt Fur Patent-, Muster- Und Zeichenwesen, Volume 8 (Germ…
By: Deutsches Patentamt
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