CPC Subgroup
F03D 9/13 storing gravitational potential energy
Full Title
Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations (hybrid wind-photovoltaic energy systems for the generation of electric power H02S10/12) > Combinations of wind motors with apparatus storing energy > storing gravitational potential energy
2 direct subcodes
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