Its a yes/no answer.
SInce the US and the Allied powers reverse engineered a lot of things from Germany after WWII. For example
The Ak47 and all of its derivatives were based on the German MP44.
The Panzerfaust became the Bazooka and RPG and anti tank weapons.
Rheintochter missile was the basis for many missiles.This has legs, because a US reverse engineered it and improved on it, they then used an early version in the Taiwanese straits crisis of 1958. Where the missile hit a Chinese mig 17 but failed to explode, it ended up in Moscow. And the USSR copied it too.
The V1 flying bombs became cruise missiles.
V2 rocket technology was used in both the US and USSR as well as UK missile and space programmes (UK did not have a space programme it did make blue streak however).
Synthetic rubber, the Haber–Bosch process was taken by all powers post ww2 to make amonia vital to feed the world.
Off my head I can think of Hybrid rice being an incredibly important invention which increased rice yields greatly discovered in the 1970s. Also the pebblebed reactor, which the Germans and South Africans apparently couldn't get to work effectively Tsinghua university is building the first operational one not a prototype in 2013.
There are probably many things copied back and forth, and some natively designed things and some copied things which everybody does.....