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A resuscitation apparatus including improved mouth and nasal seal means and improved gas flow passage maintaining configurations....
http://www.google.ca/patents/US4559940?utm_source=gb-gplus-share
Patent US4559940 - Resuscitation apparatus
Resuscitation apparatus
Gerald E. McGinnis
Overview
Abstract
Drawings
Description
Claims
Patent number
: 4559940
Filing date
: 6 Feb 1984
Issue date
: 24 Dec 1985
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