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The role of patents in technological progress with special attention to patent activity in the Netherlands.

Proefschrift--Rotterdam. / Includes bibliographical references.

Identiferoai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/555702123
Date January 1948
CreatorsMaarschalk, Coenraad Gerrit Danièˆl.
PublisherDen Hague,
Source SetsOCLC
LanguageEnglish
Detected LanguageEnglish

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