(under subclass 373) Subject matter wherein the electrode is placed in a vagina and attached to a maturing fetus while in a female's womb.
SEE OR SEARCH THIS CLASS, SUBCLASS:
453, for fetal HR monitoring and subclass 511 for fetal heartbeat monitors.
SEE OR SEARCH CLASS
607, Surgery: Light, Thermal, and Electrical Application, cross-reference art collection 902 for fetal monitoring devices for monitoring conditions other than the heart rate.