| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 341 | DD | TRANSPORTABLE OR PORTABLE SHIELDED CONTAINERS [G21F-5/00] {9} |
| DIG 353 | DD | .~ With provision for restricted exposure of a radiation source within the container [G21F-5/02] {1} |
| DIG 354 | | .~.~ Means for controlling exposure (e.g., time, size of aperture) [G21F-5/04] |