I haven't found a reference for the Poschinger attribution however the glass on that site is normally fairly well id'd I think.
That said, Poschinger did make a 'cinderella ballgown' type piece with a side handle and trailing and prunts on it, so it's not out of the question that mine 'could' be by them I guess. It has more similarities with that jug than anything else I have seen so far...just musing here though.
It could also make it earlier than the 30's.
If that information is correct, it's odd that the technique was patented here in 1905 isn't it?
How would you patent a technique that was clearly used earlier if that dating is correct on the jug?