Siemens & Halske AG was a German electrical engineering company that later became part of Siemens.
It was founded on 12 October 1847 as Telegraphen-Bauanstalt von Siemens & Halske by Werner von Siemens and Johann Georg Halske. Wikipedia
Founders: Johann Georg Halske and Werner von Siemens
Founded: October 12, 1847
Headquarters: Berlin, Germany