04299234 is referenced by 18 patents and cites 5 patents.

Apparatus and method for continuously monitoring the fetal heart rate simultaneously using ultrasonic and electrocardiographic signals. The signals are continuously processed to provide an improved output fetal heart rate indication in terms of better continuity and accuracy.

Title
Fetal heart rate monitor apparatus and method for combining electrically and mechanically derived cardiographic signals
Application Number
6/25720
Publication Number
4299234
Application Date
March 30, 1979
Publication Date
November 10, 1981
Inventor
John J Mandler Jr
Allston
MA, US
Joseph M Van Horn
Cambridge
MA, US
John S Ballas Jr
Newton
MA, US
Paul Epstein
Brookline
MA, US
Agent
David A Rich
Assignee
Brattle Instrument Corporation
MA, US
IPC
A61B 5/04
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