Birger Jarl | Birger Sjöberg | Karl-Birger Blomdahl | Charles Birger | Birger, King of Sweden | Birger Jarls Torn | Birger Jarls torn | Birger Jarlsgatan | Birger | Fredrik Ljungström | Birger Ruud | Birger Ragnvald Sevaldson | Birger of Sweden | Birger Brosa | Birger Bergersen |
A contra-rotating steam turbine, usually known as the Ljungström turbine, was originally invented by Swedish Engineer Fredrik Ljungström (1875–1964) in Stockholm, and in partnership with his brother Birger Ljungström he obtained a patent in 1894.