| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 306 | DD | ARRANGEMENTS OF REACTOR AND ENGINE IN WHICH REACTOR-PRODUCED HEAT IS CONVERTED INTO MECHANICAL ENERGY [G21D-5/00] {2} |
| DIG 308 | DD | .~ Reactor and engine not structurally combined [G21D-5/04] {2} |
| DIG 310 | DD | .~.~ With engine working medium heated in a heat exhanger by the reactor coolant [G21D-5/08] {2} |
| DIG 312 | | .~.~.~ Liquid working medium vaporized by reactor coolant [G21D-5/12] {2} |
| DIG 313 | DD | .~.~.~.~> And also superheated by reactor coolant [G21D-5/14] |
| DIG 314 | DD | .~.~.~.~> Superheated by separate heat source [G21D-5/16] |