nineteen thirties, a partner named Kotthaus joined the enterprise, and the company became known as Helko (Helsper / Kotthaus). When Helko took over the Helsper...
3 KB (359 words) - 05:37, 29 May 2023
Max Ilgner Robert Kabelac [de] Gustav Köllmann [de] Hans Kohnert August Kotthaus (Carl Zeiss, Jena) Fritz Kranefuss Carl Krauch Alfried Krupp von Bohlen...
7 KB (774 words) - 21:10, 14 September 2024