Ian Bersten also produces a familiar image, but he attributes Robbiati's patent to 1956...
From here on, it gets weirder and weirder. Fumagalli sets the date at 1950, which is approximately right, but his illustration indicates some mix'n'match activities with the jug...
As does Bhaskaran...
The jugs in the latter two illustrations are certainly from the right period, but I'd bet money they were never designed by Robbiati.
For details of the books concerned, check out the Atomic Website References