Friedrich Ern & Co., Solingen-Weyer in 1925 and 1928, Weyerstrasse 196 in 1939. Brand names: 'Commodus', 'Damokles', 'Doppeladler', 'Ern & Cie', 'Ern & Co.', 'F. Ern & Co. Weyer-Solingen', 'Kobold', 'Newton' 'Ost', 'Sprock', 'The Sir Isaac Newton', 'Vim', 'Weltbrand'. Open-blade razor maker.