| 976 / | HD | NUCLEAR TECHNOLOGY |
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| DIG 37 | DD | REACTOR FUEL ELEMENTS AND THEIR ASSEMBLIES; SELECTION OF SUBSTANCES FOR USE AS REACTOR FUEL ELEMENTS [G21C-3/00] {5} |
| DIG 58 | DD | .~ Assemblies of number of fuel elements in the form of a rigid unit [G21C-3/30] {2} |
| DIG 59 | DD | .~.~ Bundles of parallel pin-, rod-, or tube-shaped fuel elements [G21C-3/32] {9} |
| DIG 71 |  | .~.~.~ Spacer grids; other spacer devices [G21C-3/34] {6} |
| DIG 72 | DD | .~.~.~.~> Compact spacer grids (e.g., made of a plate or a blade) [G21C-3/34A] |
| DIG 73 | DD | .~.~.~.~> Spacer grids formed of assembled tubular elements [G21C-3/34B] |
| DIG 74 | DD | .~.~.~.~> Spacer grids wherein each cell has a circular cross section; cells formed of assembled metallic nonintersecting strips [G21C-3/34C] |
| DIG 75 | DD | .~.~.~.~> Spacer grids wherein each cell has a polygonal (e.g., square cross section) ; cells formed of assembled metallic nonintersecting strips [G21C-3/34D] {1} |
| DIG 80 | DD | .~.~.~.~> Spacer grids formed by metallic wires (e.g., springs) [G21C-3/34E] |
| DIG 81 | DD | .~.~.~.~> Fabrication of spacer grids [G21C-3/34F] |