Patent classifications
G
PHYSICS
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G21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
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G21F
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
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G21F7/005
Shielded passages through walls; Locks; Transferring devices between rooms
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