Radio electrocardiograph apparatus
United States Patent 3195534

Inventors:
Bethke, Lyman W.
Publication Date:
07/20/1965
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Assignee:
UNITED AIRCRAFT CORP
Primary Class:
600/508
Other Classes:
128/903, 128/902
International Classes:
A61B5/00
US Patent References:
2981911Pressure measuring apparatus
3029808Direct current medical amplifier
3051896Frequency detector
3052233Cardiac monitor
3052756
3144018Cardial conitor apparatus