US PATENT SUBCLASS 976 / DIG 335
SHIELDING CHARACTERIZED BY ITS PHYSICAL FORM (e.g., granules or shape of the material) [G21F-3/00]

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

DIG 335SHIELDING CHARACTERIZED BY ITS PHYSICAL FORM (e.g., granules or shape of the material) [G21F-3/00] {2}
DIG 336  DD  .~> Clothing [G21F-3/02] {3}
DIG 340  DD  .~> Bricks; Shields made up therefrom [G21F-3/04]