US PATENT SUBCLASS 976 / DIG 397
.~ In nuclear reactors {G21G-1/02]


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976 /   HD   NUCLEAR TECHNOLOGY

DIG 396  DD  ARRANGEMENTS FOR CONVERTING CHEMICAL ELEMENTS BY ELECTROMAGNETIC RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT (e.g., producing radioactive isotopes) [G21G-1/00] {2}
DIG 397.~ In nuclear reactors {G21G-1/02]