A sorting line for processing envelopes for photographic laboratories including a feeder unit of the processing envelopes to be sorted, a main leg for supporting and guiding a first endless conveyor for a plurality of boxes provided with a base which opens under a command correlated with a position of...http://www.google.com/patents/US5147048?utm_source=gb-gplus-sharePatent US5147048 - Sorting line for processing envelopes, particularly for photographic laboratories
