Title:
Parturitive phone
United States Patent 3348535
Inventors:
Paul, Gregg David
Publication Date:
10/24/1967
Export Citation:
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Assignee:
Paul, Gregg David
Primary Class:
600/528
Other Classes:
381/67
International Classes:
A61B5/024; A61B7/04; A61B5/024; A61B7/00
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US Patent References:
3171892Electronic apparatus for the observation of signals of biological origin
3052756N/A
2827040Automatic sphygmomanometer
2669986Apparatus for electronically locating nerve irritations
2658505Arterial pulse wave velocity meter
2409749Indicating system