Construction, i.e. structural features

Official title: {Construction, i.e. structural features, e.g. of weight-saving hollow blades (F01D5/148, F01D5/16 and F01D5/20 take precedence; blade shape F01D5/141; blades with cooling or heating channels or cavities F01D5/18; heating, heat-insulating or cooling means on blades F01D5/18)}

F01D5/147 (Construction, i.e. structural features) appears on 2,144 US grants and 2,403 published applications in this corpus.