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In page High-speed rail:
"The Van der Zypen & Charlier company of Deutz, Cologne built two railcars, one fitted with electrical equipment from Siemens-Halske, the second with equipment from Allgemeine Elektricitäts-Gesellschaft (AEG), that were tested on the Marienfelde–Zossen line during 1902 and 1903 (see Experimental three-phase railcar).[citation needed]
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