I believe that after WW2 all the patents of the German optical companies became public domain. So you could have anyone producing those pre war designs, and example is Nikon produced tesser lenses (200m, 300m 450m) Fuji C series 300, 450, 600 which I believe is an Goerz Artar derivative. While they couldn't use the name Daggor, I don't see why anyone couldn't use the lens design to produce a modern version.

Thinking about it, the Cosina guy seems to like to resurrect old style equipment like M42 mount lenses, and LTM, maybe he would be interested in creating a modern Daggor large format lens?