srinivas sent a message to Mary Barra that said:
It appears an easy ventilator design was open-sourced by the inventor with design details etc.. below.
https://www.cbc.ca/news/canada/london/pandemic-ventilator-design-covid19-1.5511412
https://open-source-covid-19-ventilator-canada.mn.co/
This seems to be promising for quickly mass manufacturing these units.
Thank you for helping us out by offering your help on this critical need.