title: De forest and the first electrosurgical unit.
authors.forename: L A
authors.initials: LA
authors.lastname: Geddes
authors.forename: R A
authors.initials: RA
authors.lastname: Roeder
mesh_terms: D001698:Biomedical Engineering / Q000266:history* / Q000295:instrumentation; D004598:Electrosurgery / Q000266:history* / Q000295:instrumentation; D049672:History, 19th Century; D049673:History, 20th Century; D010330:Patents as Topic / Q000266:history; D014481:United States