37 Installation, servicing, maintenance and repair of machines; installation, servicing, maintenance and repair of hand-held machines; renting of drilling and sawing machines, drilling and sawing machine-tools and hand-held drilling and sawing machines; installation, servicing, maintenance and repair of machine tools, machines for metal and wood working, machines for plastic processing, machines for paper processing, namely table and pillar drilling machines, die-cutting and tapping machines, threading machines, threading machines with lead screw, drilling machines, lined up drilling machines, drilling machines for brushing, drilling lines, electric hand drills, drill chucks being parts of machines, drilling heads being parts of machines, drilling bits being parts of machines, chucks being parts of machines, double grinders, belt grinders, tube polishers, truing machines, saws being machines, metal saws, band saws, circular saws, saw blades being parts of machines, automatic saw benches being parts of machines, planning machines, dressing machines and thickness planers, wood turning lathes, lathes being parts of machines, milling machines, table milling machines, dust exhausters, exhauster fans, deburring machines, hand-held tools, not hand-operated cowlings being parts of machines, housings being parts of machines, hangers being parts of machines, stands for machines, tables for machines, axles for machines, regulators being parts of machines, drills being parts of machines, punches for punching machines, punching machines, folding automates machines, springs being parts of machines, bearings being parts of machines, leather paring machines, electric machines and apparatus for polishing, cutting machines, dust exhausting installations for cleaning purposes, apparatus for cleaning, electric hammers, hammers being parts of machines, tools being parts of machines, holding devices for machine tools being parts of machines, gas-operated cutting machines, cutting blow pipes, thermic lances machines, electric welding machines, gas-operated welding apparatus, gear boxes, except for land vehicles, joints being parts of engines, governors for machines, engines and motors, compressed air machines, pressure regulators being parts of machines, pressure valves being parts of machines; installation, servicing, maintenance and repair of hand tools and implements, namely braces, breast drills, hand-drills, three jaw drill chucks, taps in the nature of hand-tools, hand drills, bits being parts of hand tools, hollowing bits being parts of hand tools, drills, carpenters' augers, augers being hand tools, drill holders being hand tools, ratchets being hand tools, graving tools in the nature of hand tools, center punches and chisels hand tools, bits in the nature of hand tools, files tools, planers, hammers being hand tools, pin punches, masons' hammers, punch pliers in the nature of hand tools and pliers, rasps hand tools, riveters hand tools, frames for hand tools and hand saws, tube cutters in the nature of hand tools, saws in the nature of hand-tools, saw holders, saw blades being parts of hand tools, expander tools and parts of the aforementioned goods