Kienzle Apparate GmbH
In the 1970s Kienzle join forces to Nixdorf to develop a terminal line.
In the 1980s it was merged with Mannesmann as Mannesmann-Kienzle, and in 1991 it was sold to the Digital Equipment GmbH and was renamed Digital-Kienzle Computer Systeme and later sold to Siemens and then eventually to VDO-Continental.
Wikipedia information