from steam engine into combustion engine

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Machines or engines with pertinent characteristics other than those provided for in main groups > characterised by means for converting from one type to a different one > from steam engine into combustion engine

CPC:

Machines or engines with pertinent characteristics other than those provided for in preceding main groups > characterised by means for converting from one type to a different one > from steam engine into combustion engine

No child classifications to compare. This is a leaf node in both IPC and CPC.