7 Exhaust installations for land, air and water vehicles with internal combustion engines; structural parts of these exhaust installations, in particular pipes of metal, mufflers, exhaust catalyst elements and soot filters, all separate or mounted in appropriate housings; turbocompressors; exhaust installations for internal combustion engines for land, air and water vehicles, aircraft and ships, and parts of these exhaust installations, in particular pipes of metal, exhaust mufflers, catalyst elements for exhaust gases, stand-alone or mounted on the housing of the internal combustion engine; housings for parts of land, air and water vehicles (except motors and engines), in particular housings for exhaust installations or heating apparatus; motors and engines (except for land vehicles); transport installations; retrofitting systems for exhaust installations for land, air and water vehicles with internal combustion engines, and for exhaust installations for internal combustion engines for land vehicles; machine tools, in particular machines for manufacturing and assembling exhaust installations; exhaust gas installations for the internal combustion engines of aircraft and ships, including parts therefor, in particular pipes of metal, exhaust mufflers, catalyst elements for exhaust gases, stand-alone or mounted on the associated housing; soot filters, stand-alone or mounted in the associated housings, for combustion engines; exhaust gas installations for air and water vehicles with internal combustion engines and parts of these installations, in particular pipes of metal, mufflers, catalyst elements for exhaust gas cleaning and soot filters; exhaust gas installations for land, air and water vehicles with internal combustion engines; parts, including structural parts of exhaust gas installations, in particular pipes of metal, mufflers, exhaust gas catalyst elements and soot filters, all separately or mounted in appropriate housing; exhaust gas installations for the internal combustion engines of road vehicles and parts therefor, in particular pipes of metal, exhaust mufflers, exhaust gas catalyst elements, stand-alone or mounted on the associated housing; exhaust gas installations for land, air and water vehicles with internal combustion engines; structural parts of these exhaust gas installations, in particular pipes of metal, mufflers, exhaust gas catalyst elements and soot filters, all separate or mounted in appropriate housings; exhaust gas installations for land vehicles with internal combustion engines; structural parts of these exhaust gas installations, in particular pipes of metal, mufflers, exhaust gas catalyst elements and soot filters, all separate or mounted in appropriate housings; exhaust gas installations for land vehicles with internal combustion engines; parts of the aforementioned goods; pipes of metal (parts of machines), mufflers; catalytic converters; soot filters; all the aforesaid goods included in this class; exhaust installations for land, air and water vehicles with internal combustion engines; structural parts of these exhaust gas installations, in particular pipes of metal, mufflers, exhaust gas catalyst elements and soot filters, all separate or mounted in appropriate housings; exhaust gas installations for land vehicles with internal combustion particular pipes of metal, mufflers, exhaust gas catalyst elements and soot filters