The main French siren manufacturer is KM Europ -
http://www.km-europ.com/boutique/images ... R_LP_2.pdf
(note that the motor in the pic says 'Klaxon' on it - KM Europ has gone into some kind of partnership with Klaxon UK).
Here are my two videos of French sirens -
http://www.youtube.com/watch?v=QwG_WcMOlUA
http://www.youtube.com/watch?v=mK-6rjWBuSU
And I have more French siren pics here
http://stevelock.fotopic.net
(previous post discussing these sirens -
http://www.airraidsirens.com/forums/vie ... 20&start=0)
The siren in tboltboy's post must be on a fire station as the telephone number
18 in the pic is for the Fire Service in France (Pompiers).
French electromechanical sirens have changed very little in appearance over the years (during WWII Paris had sirens with huge horns which were spread out - not at an angle like the current design), though any new large siren system installs these days seem to be favouring electronic sirens in France (such as in Le Havre).