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Publication coverage: 1800s - present (varies by country; updated weekly)The largest public patent database on the internet, Espacenet contains more than 100 million patent documents from more than 90 countries including Canada and the U.S., plus 2 million records for non-patent literature cited in EPO search reports.
Publication coverage: Geology of North America: 1693 - present ; Geology worldwide: 1933 - presentEstablished by the American Geological Institute (AGI) in 1966, GeoRef indexes over several thousand journals in 40 languages as well as books, maps, reports, most U.S. Geological Survey publications, and American and Canadian masters and doctoral theses.
Publication coverage: 1800s - present (varies by country; updated weekly)Explore 66 million patent documents from more than 51 regional and national patent offices. Major national collections include Canada, China, European Patent Office, Japan, Korea, Russia, U.K. and U.S. Advanced functions include chemical structure and biological sequence search; cross-lingual translation search; and national status information.