CPC Subgroup
A61F 6/24 characterised by valve means
Full Title
Contraceptive devices; Pessaries; Applicators therefor > Vas deferens occluders; Fallopian occluders > implantable in tubes > characterised by valve means
A61F 6/24 Contraceptive devices; Pessaries; Applicators therefor > Vas deferens occluders; Fallopian occluders > implantable in tubes > characterised by valve means