It does seem strange that GE would have their own camera line when they were affiliated with RCA and shared the same building ?
http://en.wikipedia.org/wiki/GE_Building#History
But in the fifties there was little foreign competition so domestic manufacturers had broad product lines.
I just found some Fifties GE metal logos on some boilers in a the basement of a building that was to be demolished. Thought "must save those brand logos from the Art Deco metal covers while I'm here"