DIFF Main Group
G21B 1/00 Thermonuclear fusion reactors
Introduced: September 1968
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
IPC defines codes here since 2006.
Child Classifications
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- G21B 1/05 with magnetic or electric plasma confinement since 2006 +3 CPC IPC+CPC Available in IPC and CPC