US PATENT SUBCLASS 976 / DIG 276
.~ Arrangements for preventing occurence of critical conditions (e.g., during storage) [G21C-19/40]


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976 /   HD   NUCLEAR TECHNOLOGY

DIG 244  DD  ARRANGEMENTS FOR TREATING, FOR HANDLING, OR FOR FACILITATING THE HANDLING OF, FUEL OR OTHER MATERIALS WHICH ARE USED WITHIN THE REACTOR (e.g., within its pressure vessel) [G21C-19/00] {11}
DIG 276.~ Arrangements for preventing occurence of critical conditions (e.g., during storage) [G21C-19/40]