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Ericsson Radio Systems AB was the name of a wholly owned subsidiary in the Ericsson sphere, founded January 1, 1983 by buying out all former owners of Svenska Radioaktiebolaget (SRA). The company was well known in Scandinavia and elsewhere in the 1980s, as it was deploying NMT systems and developing a line of mobile telephones under the brand name ''Hotline''. In 2002 the subsidiary changed its named to simply Ericsson AB and absorbed 19 other legal entities in the Ericsson sphere, but kept its company registration number with the Swedish state, so it is still the same legal entity as Ericsson Radio Systems. The merge of the smaller legal entities was done to cut down operating costs. The main activity within Ericsson AB is infrastructure for mobile telephony. ==History== January 1, 1983, the company became a wholly owned subsidiary under the name ''Ericsson Radio Systems AB''.〔 〕 This year the company had 3998 employees and described its business as ''advanced wireless communications for civilian use''. The company was organized in the following areas: * Mobile telephony, which also becomes the most expansive part of the business from 1983 and forward. * Mobile radio, in 1983 roughly 30% of the billing with products like police radio systems and radiotelephones for taxis. By the mid 1980s this business goes stagnant. * Pagers, in cooperation with the Dutch subsidiary ''NIRA''. * Microwave communications, especially dealing with a government-backed project called ''Tele-X''. This area changed its name to ''Radiotransmission'' in 1984 and was transferred to Ericssons business unit for defense products in the end of 1985.〔 October 29, 1983, the company created ''The Ericsson Mobile Telephone Laboratory'' in the science park Ideon in Lund, Sweden, and all research and development of mobile telephones was transferred there. The former development site for mobile phones in Gävle, tracing its roots back to ''Sonab mobiltelefon AB'' and as far back as ''AGA mobilradio'' was decommissioned, and none of the original developers accepted the offer to transfer to Lund.〔 〕 The mobile telephone factories in Gävle and Kumla remained. The reason for the move was that the company wanted to increase the cooperation with Faculty of Engineering (LTH), Lund University.〔 The decision for this strategic movement is claimed to have been taken at a dinner hosted by Thure Gabriel Gyllenkrok, a board member of Svenska Radioaktiebolaget, at the castle ''Björnstorp'' October 11, 1982. Also in 1983, the Swedish company ''Magnetic'', a manufacturer of mobile telephony base stations was acquired.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ericsson Radio Systems」の詳細全文を読む スポンサード リンク
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