On the net there are hints at Rodenstock, Steinheil and Hensold. In old optics literature however Zeiss-Ikon themselves are listed as manufacturer of the Novar.
With the forming of Zeiss-Ikon the optics production of Goerz was strongly reduced. This may explain that the Novar was not produced at Goerz.
Thus both stands may be true: pre- and post-fusion !
Though that with the fusion Zeiss-Jena did not take "home" that Goerz optical production seems enigmatic too me.