Commodore International
1954 - 1994
Founded in 1954 in Toronto. Later moved operational headquarters to West Chester, Pennsylvania. In 1994, the company went bankrupt and its assets were liquidated.
"Chronological History of Commodore Computer," Commodore Computers, http://www.commodore.ca/history/company/chronology_portcommodore.htm (accessed 09/04/2014)