CPC Subgroup
A63B 31/14 with valve-flaps
Full Title
Swimming aids (teaching swimming A63B69/10 - A63B69/14; life-saving in water B63C9/00) > Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs (A63B31/18 takes precedence; worn as gloves A63B31/02) > with valve-flaps