New Motor Mount Source

do you think anything Schumacher had was copyrighted ?

I think the value of Schumacher at this point is existing tooling and development work.

Some of their stuff was copies of factory parts (obsolete motor mount brackets, etc)

I bet most of it is actually. All of their conversion mounts could be. Maybe some of the factory replacement stuff wasn't, but, even some of those parts might have been if the construction was different than the factory part.

And really, I would guess that the conversion mounts are what sold better. Their factory replacement mounts are nicer than the re-popped stuff so I'm sure they did sell, but the conversion mounts are what people are always looking for.

Based on the fact that USCT gives Schumacher design credit for the hemi mounts they're listing on the USCT website I would bet there are both copyright and royalties involved.