After the merger of AEG , the Auer Company , and Siemens & Halske into Osram AG in Berlin , he supervised the whole research and development branch .
After the war , Mey was again employed at AEG .
After the merger of AEG , the Auer Company , and Siemens & Halske into Osram AG in Berlin , Mey supervised the whole research and development branch .
After the war , Mey was again employed at AEG .