If I am not mistaken there have been some restrictions on cutting edge technology of the time (electronics, for instance) but I am not sure whether that has been implemented in practice, especially in Germany and Japan, but also in Italy.
Germany and Japan, though, got heavily de-industrialised and there was a conscious plan to bring the living standards to a much lower level than they used to be. Patents also got seized, and in general Germany and Austria did not recover their pre-WW2 prestige, even, for instance, in terms of the "new Heisenbergs and Schrödingers", which never came.
