| 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] |