I agree with Nigel, well at least as far as the possible Inwald connection. I wouldn't describe this vase as being from the Barolac range though as as far as I'm aware it's not catalogued as such and the mould quality is embarrassingly poor when put next to documented Barolac pieces! (it's true, I had one of these vases but moved it on as, although a great-looking piece from a distance, I wasn't impressed by either the derivative design or the rather poor modelling on the figures...)
This design has certainly been on the board before - I remember Nigel's opalescent example and at least one other. Hajdamach shows it with a Sowerby attribution but that is almost certainly an error. As well as the three sizes which Nigel has noted, it exists in versions with a straight vertical rim and with various degrees of flanging.
This has no connection whatsoever to Georges de Feure's work other than that he is known to have designed a vase with a vaguely similar classical theme, but in reality, as M has stated, the two vases are worlds apart. De Feure's mass-produced work in glass (i.e. not his stained glass, etc.) is typically marked and seems limited to two basic designs, both of which are well-documented.