| G | SK | PHYSICS |
| G06 | KL | COMPUTING; CALCULATING; COUNTING (score computers for games A63B 71/06 , A63D 15/20 , A63F 1/18; combinations of writing implements with computing devices B43K 29/08) |
| G06D | UKL | DIGITAL FLUID-PRESSURE COMPUTING DEVICES |
| G06D 1/00 | HGR | Details, e.g. functional units (individual logic elements F15C; valves F16K) |
| G06D 1/02 | UGR1 | | . | having at least one moving part, e.g. spool valve |
|
| G06D 1/04 | UGR2 | |
| G06D 1/06 | UGR2 | |
| G06D 1/08 | UGR1 | |
| G06D 1/10 | UGR2 | |
| G06D 1/12 | UGR2 | |
| G06D 3/00 | HGR | Computing devices characterised by the interrelationship of the functional units and having at least one moving part |
| G06D 5/00 | HGR | Computing devices characterised by the interrelationship of the functional units and having no moving parts |
| G06D 7/00 | HGR | Computing devices characterised by the combination of hydraulic or pneumatic functional elements with at least one other type of functional element |