NSU WANKEL

ROTARY PISTON MACHINES, ESPECIALLY INTERNAL COMBUSTION ENGINES, EXPANSION MACHINES, COMPRESSORS, PUMPS, PLANTS, I.E. PRESSURE GAS GENERATORS WITH AFTER-TURBINES AND INTERNAL COMBUSTION ENGINES WITH EXHAUST-GAS TURBINES, PARTS OF THE AFORESAID GOODS, ESPECIALLY PISTONS, ROTORS, SEALS, SHAFTS AND MACHINE TOOLS FOR FABRICATING TROCHOIDAL SURFACES