Compagnie générale de télégraphie sans fil
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Sources of Information
- La radioélectricité en France sous l'Occupation, c2012:t.p. (Compagnie générale de télégraphie sans fil) p. [5] (CSF) p. 12 (CSF was founded in 1919)
- history page (CSF was founded in 1918; with its subsidiary Société française radioélectrique (SFR), acquired in 1957, CSF was a key player in the 1930s development of broadcasting, short wave, electro-acoustics and early radar and television systems ( (Thales www site, viewed 5 March 2015:) )
- Télonde, 1958-