https://patft.uspto.gov/netahtml/PTO/search-bool.html Search U.S. patents from the full text and image database at the patent office. Search by patent number or date, keyword or inventor. Search all patents from 1790 through 1975.
http://c4sif.org/ The Center for the Study of Innovative Freedom (C4SIF) is dedicated to building public awareness of the manner in which laws and policies impede innovation, creativity, communication, learning, knowledge, emulation, and information sharing. We are for property rights, free markets, competition, commerce, cooperation, and the voluntary sharing of knowledge, […]
https://www.fsf.org/campaigns/campaigns-summaries “The FSF’s campaigns target important opportunities for free software adoption and development, empower people against specific threats to their freedom, and move us closer to a free society.”