WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

G21J　NUCLEAR EXPLOSIVES; APPLICATIONS THEREOF (electric or magnetic analogue computers, e.g. simulators, for nuclear physics G06G 7/54)

　　NOTE - This subclass covers uncontrollable fission or fusion reactions.

G21J 1/00 Nuclear explosive devices {"atomic bombs"}

G21J 3/00 Peaceful applications of nuclear explosive devices {obtaining oil, gas, water, soluble or meltable material from deep wells by means of nuclear energy E21B 43/2635, E21B 43/2403}

G21J 3/02 ・for excavation

G21J 5/00 Detection arrangements for nuclear explosions (individual measuring devices G01)

--- Edited by Muguruma Professional Engineer Office(C), 2013 ---