|  1/00  | Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00) | 
|  1/02  | Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00) the working fluid being an unheated pressurised gas | 
|  1/04  | Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00) the working fluid being heated indirectly | 
|  1/05  | Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00) the working fluid being heated indirectly characterised by the type or source of heat, e.g. using nuclear or solar energy | 
|  1/06  | Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00) the working fluid being heated indirectly characterised by the type or source of heat, e.g. using nuclear or solar energy using reheated exhaust gas (F02C 1/08 takes precedence) | 
|  1/08  | Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00) the working fluid being heated indirectly Semi-closed cycles | 
|  1/10  | Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00) the working fluid being heated indirectly Closed cycles | 
|  3/00  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) | 
|  3/02  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) using exhaust-gas pressure in a pressure exchanger to compress combustion-air (pressure exchangers per seF04F 13/00) | 
|  3/04  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) | 
|  3/045  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) having compressor and turbine passages in a single rotor (F02C 3/073 takes precedence) | 
|  3/05  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) having compressor and turbine passages in a single rotor (F02C 3/073 takes precedence) the compressor and the turbine being of the radial flow type | 
|  3/055  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) the compressor being of the positive-displacement type | 
|  3/06  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) the compressor comprising only axial stages (F02C 3/1 takes precedence) | 
|  3/067  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) the compressor comprising only axial stages (F02C 3/1 takes precedence) having counter-rotating rotors (F02C 3/073 takes precedence) | 
|  3/073  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) the compressor comprising only axial stages (F02C 3/1 takes precedence) the compressor and turbine stages being concentric | 
|  3/08  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) the compressor comprising at least one radial stage (F02C 3/1 takes precedence) | 
|  3/09  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) the compressor comprising at least one radial stage (F02C 3/1 takes precedence) of the centripetal type | 
|  3/10  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) with another turbine driving an output shaft but not driving the compressor | 
|  3/107  | Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) with two or more rotors connected by power transmission |