Hagström (Swedish pronunciation: [ˈhɑ̌ːɡstrœm]) is a musical instrument manufacturer in Älvdalen, Dalecarlia, Sweden. Their original products were accordions that they initially imported from Germany and then Italy before opening their own facility in 1932. During the late 1950s, the company started making electric guitars and later amplifiers. The early guitars were heavily influenced by the accordion production and had a special look and feel. Hagström were the first company to mass-produce 8 string bass guitars as well as the first to build a guitar/synthesizer hybrid (Swede Patch 2000).
https://en.wikipedia.org/wiki/Hagstr%C3%B6m