Commercially Available Products

That page lists more or less complete setup available for purchase or Do It Yourself projects.

Legacy products. As long as transparencies/slides/chromes existed there were device sole purpose of which was to duplicate the slides.

Nikon arguably was the most prolific manufacturer of slide copy adapters.

[Nikon PS4]

Nikon PS5]

[Nikon PS6]

[Nikon ES-1]

[Nikon ES-2]

Canon

Minolta

Professional copy stations for slides

Peter Krogh  at  http://thedambook.com/dyp/copystands/ has books and equipment. Check out his site especially http://thedambook.com/dyp/filmcopiers/ the film copiers make me ( FiveDigits) salivate.