active 1899-1963, electronic communication equipment manufacturer, United Kingdom

1896/7 - founded by Guglielmo Marconi as the Wireless Telegraph & Signal Company (aka Wireless Telegraph Trading Signal Company)

1899/1900 - incorporated as a limited company as Marconi Wireless Telegraph Company Limited

1946 - taken over by English Electric, although continued to trade under original name until 1963

1963 - name changed to The Marconi Company Limited

Ericsson - parent company: Telefonaktiebolaget LM Ericsson