US PATENT SUBCLASS 600 / 524
.~.~.~.~.~ Magnetic recording

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}
523  DF  .~.~.~.~ Signal display or recording {2}
524.~.~.~.~.~ Magnetic recording

DEFINITION

Classification: 600/524

Magnetic recording:

(under subclass 523) Subject matter wherein a record representative of a heartbeat electric signal is stored in a magnetic storage device (e.g., a magnetic tape or drum).