US PATENT SUBCLASS 976 / DIG 349
.~ Closures for containers or corresponding sealing arrangements [G21F-5/00J]


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976 /   HD   NUCLEAR TECHNOLOGY

DIG 341  DD  TRANSPORTABLE OR PORTABLE SHIELDED CONTAINERS [G21F-5/00] {9}
DIG 349.~ Closures for containers or corresponding sealing arrangements [G21F-5/00J]