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A Study of Patent Thickets

Bronwyn H. HallChristian HelmersGeorg Von GraevenitzChiara Rosazza-Bondibene

出版	Intellectual Property Office, 2013
ISBN	19089087859781908908780
URL	http://books.google.com.hk/books?id=d7LcoAEACAAJ&hl=&source=gbs_api