# Takuo Aoyagi, an Inventor of the Pulse Oximeter, Dies at 84

> The New York Times article (May 1, 2020)

**Wikidata**: [Q123551857](https://www.wikidata.org/wiki/Q123551857)  
**Source**: https://4ort.xyz/entity/takuo-aoyagi-an-inventor-of-the-pulse-oximeter-dies-at-84