7
Air and gas condensers, filters (parts of machines, motors and engines), compressors (machines) and parts thereof, included in class 7; compressors for cooling installations and parts therefor, included in class 7
9
Fill level meters, valves, in particular solenoid valves, diaphragm valves, valve controllers, manometers, in particular differential pressure manometers, pressure gauges, in particular temperature and pressure gauges, level and pressure gauges
11
Apparatus and installations for filtering liquids, gas and air, in particular compressed air; gas and air condensers (except machine parts); drying apparatus and installations, in particular for compressed air drying; filter media, in particular in the form of fabrics or membranes, for filtering gas (including in the form of compressed air) and/or liquids in industrial installations; apparatus and installations for separating oil and water; apparatus and installations for evacuating and processing condensate from the drying and filtering of gases and air, in particular compressed air
37
Building construction, repair and installation services, in particular installation, maintenance, monitoring and diagnostics (included in class 37), and repair of industrial installations, in particular energy and compressed air installations; construction of permanent industrial installations, in particular energy and compressed air installations
42
Technical consultancy, research, planning and development in the field of technical installations, in particular energy and compressed air installations; needs analysis and error analysis and optimisation of energy and compressed air installations; development of software, in particular for optimising and controlling energy and compressed air installations; quality management, namely quality planning, quality control, quality assurance and quality checking