Hi Lisa -remember me? What is it precisely you wish to find out about Bellova? It has been - as far as I've been able to find out - a brand name from McFaddin which they had produced by S&N in Moravia same as their Emeralite brand, or in the S&N plant at Zayn-Ugroc on the Hungarian border which did enamel decoration. There is or was (despite rumours to the contrary) no Bellova works, it was merely a brand name used in the US. Bellova products have never been sold on this side of the pond and are therefore unknown.
Maybe Marcus has some additional information on the fate of S&N after the war - but they were subcontractor, and it is very doubtful if you'll find out anything more than that.