Search Compendex, Geobase, and Inspec for your topic and limit to PATENT in Document field.
Contains the Compendex (1969-present), Ei Backfile (Engineering Index from 1884-1968), Inspec (1969-present), and Inspec backfile (1896-1968) databases for searching on a broad range of topics within the scientific, applied science, technical, and engineering disciplines.
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