US PATENT SUBCLASS 600 / 511
.~.~.~.~ Fetal heartbeat

Current as of: June, 1999
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600 /   HD   SURGERY

300  DF  DIAGNOSTIC TESTING {38}
481  DF  .~ Cardiovascular {6}
508  DF  .~.~ Heart {4}
509  DF  .~.~.~ Detecting heartbeat electric signal {10}
511.~.~.~.~ Fetal heartbeat

DEFINITION

Classification: 600/511

Fetal heartbeat:

(under subclass 509) Subject matter for detecting the pulsation of a fetal heart.