Title:
Respiration monitoring device
United States Patent 2831181


Inventors:
Harold, Warner
Application Number:
US56180856A
Publication Date:
04/15/1958
Filing Date:
01/27/1956
Assignee:
Harold, Warner
Primary Class:
Other Classes:
340/595
International Classes:
A61B5/08
View Patent Images:
US Patent References:
2473922N/A1949-06-21
2435181Breathing indicator1948-01-27
2193945Apparatus for measuring and supervising the heart action1940-03-19