Does anyone know where the Argentinian beer, Cerveza Patagonia, can be purchased in the U.S.?

Yes you can get Cerveza Patagonia in the USA.

I'm Argentinian and I don't know that beer.

But in Miami, FL there is the biggest Argentine community in the U.S. I think if you don't find that there, very difficult to find that somewhere else.

There is a place called "Little Buenos Aires" there.

Not sure where you are located but where i live in western ny, there is a place called Beers of th World and they got soo many different beers from all over the planet!

Well Ilived in Buenos Aires and don't recall this beer but what I can tell you is if you have a good liquor store and ask them to order it for you thats your best bet, I use to do this and my store was very accomadting (I was mostly requesting celis before they were sold)