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Derwent innovations index.

Thomson Reuters.

Philadelphia : Thomson Reuters.

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Title:
Derwent innovations index.
Author: Thomson Reuters.
Subjects: Chemical engineering -- Patents -- Indexes; Chemistry -- Patents -- Indexes; Electronic apparatus and appliances -- Patents -- Indexes; Electrical engineering -- Patents -- Indexes; Mechanical engineering -- Patents -- Indexes; Electric engineering; Mechanical engineering; Patent searching; Patents; Databases; Indexes; Patents; Databases -- Engineering and Informatics; Databases -- Biomedical Engineering; Databases -- Civil Engineering + Hydrology; Databases -- Electrical + Electronic Engineering; Databases -- Industrial Engineering; Databases -- Information Technology; Databases -- Mechanical Engineering; Databases -- Reference; Databases -- IREL; Databases -- Chemistry; Databases -- Patents + IP; Databases -- Patents; Databases -- Index / Abstracts
Description: Coverage includes patent records from Derwent World Patents Index (DWPI) and patent citation information from Patents Citation Index (PCI.) You may search 11 Million basic inventions and 22 million patents drawn from 40 patent-issuing authorities around the world from 1963 – present.DII has three sections: Chemical; Engineering; Electrical & Electronic and is updated weekly.
Publisher: Philadelphia : Thomson Reuters.
Format: 1 online resource..
Language: English

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