37 installation, fitting, repair, maintenance and preventative maintenance of machines, mechanical apparatus and mechanical devices in the fields of handling and lifting and vehicular technology, mobile cranes, namely, telescopic cranes, lattice mast cranes, dock cranes and railway cranes, gantry cranes, column jib cranes, order pickers for commissioning goods, transposition bridges, namely, devices for transpositioning bridge cranes between the elevated track of the bridge crane and a maintenance area, cranes for lifting and moving long objects, container handling devices, namely, devices for loading and unloading containers, electrical and electronic apparatus, devices and instruments for the open-loop and closed-loop control of handling and lifting machines and devices, namely, process computers, data transmission units, namely, remote controls, driverless transportation vehicles in the nature of automated guided vehicles, namely automated guided vehicles in the nature of wheel-driven trucks for containers having an automatic electric and electronic control system for driving and steering the vehicle without a driver