European countries, for uses such as banking. The aircraft computer (CK 37) was used in 1971 in the Viggen. The company was sold in 1975 to Sperry UNIVAC, while Saab retained its flight computer development. In May 1965, the company name was changed to Saab AB to reflect its broad range of activities. In 1968 Saab AB merged with the Swedish lorry, bus and heavy-duty diesel engine manufacturer Scania-Vabis, and became Saab-Scania AB. In 1990 General Motors bought 51% of the car division Saab Automobile, and acquired the rest a decade later. In 1991 Investor AB completed a leveraged buyout of Saab-Scania AB. Investor AB acquired all the outstanding shares in Saab-Scania for approximately SEK 21 billion. Saab-Scania became a wholly owned subsidiary of Investor AB and the company was de-listed. In 1995 Saab-Scania was divided by Investor AB into two independent companies, de-merging into Scania AB and Saab AB. The intention by Investor AB was to broaden ownership in the two companies later. Following the sale of 50% of the car division Saab Automobile AB to General Motors, the main reason behind the merger with lorry manufacturer Scania-Vabis in 1968 had disappeared. Also in 1995 Saab Military Aircraft and British Aerospace (now BAE Systems) formed the joint venture company Saab-BAe Gripen AB, to manufacture, market and support Gripen internationally. This co-operation was extended in 2001 with the formation of Gripen International for the same purpose. From 1998 until 2005 British Aerospace/BAE was the largest shareholder in Saab following its acquisition of a 35% stake from Investor AB. In January 2005, BAE Systems reduced its shareholding to 20%. Investor AB maintained a 20% share. 16 November 1999, Saab announced its intention is to purchase Celsius AB and the acquisition was concluded by early March 2000. In September 2000 United Defense Industries (UDI) purchased Bofors Weapon Systems from Saab (the autocannon and tube artillery interests), while Saab retained the missile interests. In December 2005 Saab joined the Dassault nEUROn project as a major partner. In October 2008 the company announced its intention to merge its operations with that of Simrad Optronics. The new unit will develop high-tech optronics products and will be headquartered in Norway, although other details of the new arrangement have not been finalized. In 2010 the company restructured from fifteen business units into five business areas; Aeronautics, Dynamics, Electronic Defence Systems, Security and Defence Solutions, and Support and