Inspec
Inspec is a major indexing database of scientific and technical literature, published by the Institution of Engineering and Technology, and formerly by the Institution of Electrical Engineers, one of the IET's forerunners.
Inspec coverage is... Wikipedia
History: 1872–present
Format coverage: Journal articles, Standards, Patents, Thesis and Conference proceedings
Geospatial coverage: Global
No. of records: Over 17,000,000 and growing
Record depth: Index & abstract
Temporal coverage: 1969–present