To answer one of my own questions, it looks like the «disques à aiguille» (standard lateral-cut) had been made available at least by September 1930. The «disques à saphir» (vertical-cut) were dropped in 1932. Sources: http://www.hervedavid.fr/francais/phono/Disques%20Pathe%20Saphir.htm http://www.hervedavid.fr/francais/phono/Pathe.htm -HA