7 Machinery for the graphic industry, namely, stackers, gatherers, inserters, stitchers, coverers, gripper conveyors, trimmers, book binders, casemakers, wrapping machines, rounder-backer liners, trimming cutters and/or mechanical trimming devices, mail room equipment, feeding units or mechanical feeding devices for hopper loaders, loaders and unloaders of printed matter containers and parts and controls for the above devices