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AlliedBarton Security Services is a security officer company based in the United States. It is a combination of earlier companies - Barton Protective Services, Spectaguard, Initial and Allied Security. It is the largest American-managed security company. AlliedBarton exploits a number of markets, including: *Chemical & Petrochemical *Colleges & Universities *Commercial Real Estate *Defense & Aerospace *Financial Institutions *Government Services *Healthcare *Manufacturing & Industrial *Residential Communities *Shopping Centers *Transportation *Utilities ==Timeline== *1957 - Allied Security, Inc. was founded in Pittsburgh, Pennsylvania. *1977 - Barton Protective Services was founded in Atlanta, Georgia. *1980 - Spectaguard was founded in Philadelphia, Pennsylvania. *1999 - Spectaguard acquired Effective Security Systems and Effective Management Services, of White Plains, NY. *2000 - Spectaguard acquired Allied and combines to form Allied Security - the third largest security company in the United States. *2003 - Allied acquires Professional Security Bureau (PSB). *2004 - Allied acquires Security Systems Inc. (SSI) of Malden, MA and Barton Protective Services to form AlliedBarton Security Services - creating the largest American-owned contract security services company in the United States. *2006 - AlliedBarton acquires Initial Security *2015 - Wendel acquires AlliedBarton Security Services〔http://www.alliedbarton.com/Media-Center/Press-Releases/View-Press-Release/ArticleId/814/Wendel-to-Acquire-AlliedBarton-Security-Services 〕 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「AlliedBarton」の詳細全文を読む スポンサード リンク
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