ABM Industries

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ABM Industries Incorporated NYSE: ABM is an American corporation involved in outsourced, building maintenance. Divisions include ABM Janitorial, Ampco System Parking, ABM Engineering, American Commercial Security (ACSS), Security Services of America (SSA), Amtech Lighting, and ABM Facility Services.

Founded in 1909 by Morris Rosenberg as a one-man window washing business, they took the name American Building Maintenance in 1913. In 1927, they acquired Easterday Janitorial Supply Company. His sons took over after his death.

They were listed in 1945 on the American Stock Exchange. in 1967, Ampco Auto Parks, which became Ampco System Parking in 1993, became the newest Division of the Company. In 1972 they were listed on the New York Stock Exchange.

Through a series of mergers and acquisitions, ABM had revenues above $2 billion as of 2001.

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