Electric-Current Relay
Creation Information
Context
Audiences
patent as a primary source within our collections. Researchers, educators, and students may find this patent useful in their work.
We've identified thisContact Us
Subjects
Mapped Locations
Electric-Current Relay, patent, July 19, 1921; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1258266/: accessed April 27, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.