DIFF Subgroup
G21H 1/04 Cells using secondary emission induced by alpha radiation, beta radiation, or gamma radiation
Introduced: September 1968
Full Title
Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes > Cells using secondary emission induced by alpha radiation, beta radiation, or gamma radiation
No child classifications to compare. This is a leaf node in both IPC and CPC.