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<http://webisa.webdatacommons.org/379704325>	<http://www.w3.org/ns/prov#value>	"Patente US4636200 - Intubating device - Google PatentesB???squeda Im???genes Maps Play YouTube Noticias Gmail Drive M???s ??Iniciar sesi???n B???squeda avanzada de patentesPatentesThis invention relates to a new and improved intubating device and more particularly to an intubating device wherein it can be determined that the metal stylet is properly positioned by the aspiration process without rem" .