US PATENT SUBCLASS 976 / DIG 319
SHIELDING CHARACTERIZED BY THE COMPOSITION OF THE MATERIALS [G21F-1/00]

Current as of: June, 1999
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976 /   HD   NUCLEAR TECHNOLOGY

DIG 319SHIELDING CHARACTERIZED BY THE COMPOSITION OF THE MATERIALS [G21F-1/00] {2}
DIG 320  DD  .~> Selection of uniform shielding materials [G21F-1/02] {6}
DIG 333  DD  .~> Laminated shielding materials [G21F-1/12] {1}