Apparatus for handling photographic slides is disclosed. According to one aspect of the invention, the apparatus is adapted to support two rotary slide trays disposed one above the other. Means is provided for indexing the lower tray and a coupling member extends between the two trays so that the upper...http://www.google.fr/patents/US4354745?utm_source=gb-gplus-shareBrevet US4354745 - Slide handling apparatus
