Patents & Standards
IEEE Xplore Digital Library 1872+
Full-text journals across the fields of electrical and biomedical engineering, communications, computer science, aerospace, energy, robotics, etc.. Also contains IEEE conference proceedings, standards and added content from IET, VDE & Bell Lab.
IHS Global
Standards search engine.
Standards.gov
Provides information and search engine for standards used by the U.S. Government.
TechStreet
Free database that aids in identifying standards.