The parent Brown Boveri was founded in Switzerland in 1905. They were manufacturing industrial gas turbines until the pre-war years of WWII. In those days they made a project aviation use.

-By 1944 there was another 2,000 CV turboprop project as shown below.

"BBC turboprop project"

-The German branch of the company was involved in the development of axial compressors for the BMW 109-003 and in the development of the Swiss EFW SM-03 compressor.