4 Fuel, in particular crude oil, heating oil, gas, natural gas and liquid gas.
9 Data carriers, in particular data carriers with rewrite and recharge capability, including chip cards and encoded magnetic cards, in particular prepaid cards with credit balances and credit limits; meters, in particular electricity, gas, water, waste water and heat meters, in particular meters controlled by the aforesaid data carriers with electricity, gas, water and heat release and cut-off switches, and remote controls therefor; data processing equipment, in particular accounting systems; writing and reading apparatus for the aforesaid data carriers.
36 Financial affairs, debt collection and clearing of bills; issuing of prepaid cards and credit cards, in particular rechargeable prepaid cards for purchasing electricity, gas, water and heat.
37 Building construction, repair, installation services, in particular the construction, maintenance and repair of buildings, telecommunications devices, installations and public networks for the supply of electricity, gas, in particular natural gas, crude oil, heating and long-distance heating, water supply, drainage and waste water treatment, in particular in the municipal sector, and which provide telecommunications, in particular supply lines, including electricity, gas, heating, long-distance heating, water, waste water and telecommunications lines.
38 Telecommunications, in particular the establishment and operation of telecommunications installations and networks.
39 Transport and distribution of electricity, gas, heating, long-distance heating and water, in particular drinking water and waste water, in particular via pipelines.