US PATENT SUBCLASS 600 / 525
.~.~.~.~.~ Cathode-ray tube used for display or included in recording means

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}
525.~.~.~.~.~ Cathode-ray tube used for display or included in recording means

DEFINITION

Classification: 600/525

Cathode-ray tube used for display or included in recording means:

(under subclass 523) Subject matter including a cathode-ray tube which is used for either displaying the heartbeat electric signal or recording it (e.g., a cathode-ray tube combined with a camera).