After the insolvency of Ingersoll, USA, the companies WaldrichSiegen and Waldrich Coburg were acquired by the owner family of Maschinenfabrik Herkules in 2004. ... Waldrich, Siegen, Grosswerkzeugmaschinen: Festschrift für Oskar Waldrich, Dr. -Ing. Ehrenhalber der Technischen Hochschule Karlsruhe, Ehrenbürger der Technischen Hochschule Aachen ...