7 Pumps, in particular pumps for heating installations, drinking water heating installations and water supply (except pumps for medical purposes); Motors and engines, in particular electric motors (except for land vehicles); Spare parts for pumps, motors and engines, included in class 07.
9 Measuring, regulating and control apparatus, in particular for pumps, electric motors, heating and drinking water heating installations; Electrotechnical apparatus, included in class 09.
11 Heating installations; Heating apparatus; Water heaters; Heating boilers; Heating elements; Air-conditioning installations; Water conduit installations; Drinking water heating installations; Heat pumps; Heat accumulators; Accumulators being parts of heating and/or water supply installations; Insulating shells being parts for pumps, heating and/or water supply installations.
37 Installation, maintenance and repair of pumps, electric motors, heating and drinking water heating installations.