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Introduction to Patents Information
註釋This guide is a practical introduction to searching for patent information and is aimed at both the interested beginner and the more experienced user who can employ the guide as a reference tool. It explains how patent documents evolve and what they consist of; the numeration and structure of the patent documents of six major patenting authorities; and how to carry out subject searching, with an extensive appendix on major databases. There are many illustrations taken from the actual patent specifications.