Espacenet offers free access to more than 90 million patent documents worldwide, containing information about inventions and technical developments from 1836 to today. The worldwide database contains information on published patent applications and granted patents from over 90 patent-granting authorities.
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Scopus is an abstract and citation database of peer-reviewed literature: scientific journals, books and conference proceedings. Delivering a comprehensive overview of the world's research output in the fields of science, technology, medicine, social sciences, and arts and humanities, Scopus features smart tools to track, analyze and visualize research.