| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 166 | DD | PRESSURE VESSELS; CONTAINMENT VESSELS [G21C-13/00] *** (chemical or physical processes B01J-3/00; pressure vessels in general F16J-12/00) {3} |
| DIG 186 | | .~ Means for preventing contamination in the event of leakage (e.g., double wall) [G21C-13/10] |