TechSource is an electronic patent system that holds the scanned images of over 1.3 million patent documents dating back to 1920 and the text version of patent documents from 1978.

TechSource is an electronic patent system which holds the scanned image of over 1.5 million patent documents dating back to 1920 and the text version of the documents from 1978.

a unit of the publishing department of the American Library Association