The current owners are Friedrich Schadeberg and his sister Barbara Lambrecht - Schadeberg , his daughter Petra Schadeberg - Hermann .
In October 1922 , Bernhard Schadeberg assumed the management of the company , running to this day .
The current owners are Friedrich Schadeberg and his sister Barbara Lambrecht - Schadeberg , his daughter Petra Schadeberg - Hermann .
In October 1922 , Bernhard Schadeberg assumed the management of the company , running to this day .