By what name was the city, in which the company Prior Radiofabrikk was located, known from 1877 until 1925 ?
Prior Radiofabrikk Prior Radiofabrikk was a radio manufacturing company in Oslo, Norway.
Ludwigshafen Ludwigshafen am Rhein (] ) is a city in Rhineland-Palatinate, Germany, on the Rhine opposite Mannheim. With Mannheim, Heidelberg and the surrounding region, it forms the Rhine Neckar Area.