US PATENT SUBCLASS 976 / DIG 61
.~.~.~ Coats and envelope surrounding the assembly [G21C-3/32C]


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976 /   HD   NUCLEAR TECHNOLOGY

DIG 37  DD  REACTOR FUEL ELEMENTS AND THEIR ASSEMBLIES; SELECTION OF SUBSTANCES FOR USE AS REACTOR FUEL ELEMENTS [G21C-3/00] {5}
DIG 58  DD  .~ Assemblies of number of fuel elements in the form of a rigid unit [G21C-3/30] {2}
DIG 59  DD  .~.~ Bundles of parallel pin-, rod-, or tube-shaped fuel elements [G21C-3/32] {9}
DIG 61.~.~.~ Coats and envelope surrounding the assembly [G21C-3/32C]