thumb|200px|A 1951 Berna trolleybus in service in Biel/Bienne in 1979 Berna was a Swiss manufacturer of buses, trolleybuses and trucks, which later also specialized in surface metallurgical treatments and components. Until the 1960s it was primarily a vehicle manufacturer, but between 1965 and 1978 vehicle manufacturing was phased out and replaced with other products. The company was based in Olten.
==History==
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).