The Deutsche Gesellschaft für Schädlingsbekämpfung mbH (translation: German Corporation for Pest control), in short Degesch, is a German chemical corporation, Degesch had the patent of the infamous Zyklon B, was the trade name of a cyanide-based pesticide invented in which country in the early 1920s?
Zyklon B Zyklon B ( ; ] ; translated Cyclone B) was the trade name of a cyanide-based pesticide invented in Germany in the early 1920s. It consisted of hydrogen cyanide (prussic acid), as well as a cautionary eye irritant and one of several adsorbents such as diatomaceous earth. The product is infamous for its use by Nazi Germany during the Holocaust to murder approximately one million people in gas chambers installed at Auschwitz-Birkenau, Majdanek, and other extermination camps.
Maschinenbau Anstalt Humboldt The Maschinenbauanstalt Humboldt was a German mechanical engineering firm in Cologne-Kalk and a precursor to the firm of Deutz AG. It was founded in 1871 as "Maschinenbau A.G. Humboldt", liquidated due to debts in 1884 and reformed as "Maschinenbauanstalt Humboldt A.G.".