US PATENT SUBCLASS 976 / DIG 103
.~.~ Means for preventing undesired asymmetric expansion of the complete structure (e.g., stretching devices, pins) [G21C-5/08]


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976 /   HD   NUCLEAR TECHNOLOGY

DIG 99  DD  MODERATOR OR CORE STRUCTURE; SELECTION OF MATERIALS FOR USE AS MODERATOR [G21C-5/00] {4}
DIG 100  DD  .~ Details [G21C-5/02] {4}
DIG 103.~.~ Means for preventing undesired asymmetric expansion of the complete structure (e.g., stretching devices, pins) [G21C-5/08]