Georgsmarienhütte, lower saxony: bird's eye view of the factory of the railway signal construction company c. Stahmer ag, founded in 1862, which merged with the signalbauanstalt ag bruchsal in 1908, later becoming deutsche eisenbahnsignalwerke ag, formerly schnabel & henning, c. Stahmer, zimmermann & buchloh, and in 1926 becoming eisenbahnsignal-bauanstalten max jüdel, stahmer, bruchsal ag, whose shares later belonged entirely to the siemens group. Date: 1913.
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