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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Union Switch & Signal ： ウィキペディア英語版 Union Switch & Signal Union Switch and Signal (US&S) was a supplier of railway signaling equipment, systems and services in Pittsburgh, Pennsylvania. As of January 1, 2009, US&S is known as Ansaldo STS USA. ==History== George Westinghouse founded Union Switch & Signal in 1881, consolidating the assets of the Union Electric Signal Company (founded by track circuit inventor William Robinson) and the Interlocking Switch & Signal Company (which had pioneered interlockings).〔Ansaldo STS. ("History of Ansaldo - key milestones." ) Accessed 2011-07-12.〕 In 1925 US&S acquired the Hall Signal Company, primarily to obtain the latter company's patents for searchlight signals. 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「Union Switch & Signal」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.