US PATENT SUBCLASS 976 / DIG 203
.~.~ For gases (ventilators) [G21C-15/24D]


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976 /   HD   NUCLEAR TECHNOLOGY

DIG 187  DD  COOLING ARRANGEMENTS WITHIN THE PRESSURE VESSEL CONTAINING THE CORE; SELECTION OF SPECIFIC COOLANTS [G21C-15/00] {7}
DIG 199  DD  .~ Promoting flow of the coolant [G21C-15/24] {4}
DIG 203.~.~ For gases (ventilators) [G21C-15/24D]