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#1
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The retired inventor of N95 masks is back at work
The retired inventor of N95 masks is back at work, mostly for free, to
fight covid-19 https://www.washingtonpost.com/lifes...line_manual_35 And a bit about how the masks were developed and how they work, iirc. |
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#2
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The retired inventor of N95 masks is back at work
On 10/23/2020 10:20 PM, micky wrote:
The retired inventor of N95 masks is back at work, mostly for free, to fight covid-19 https://www.washingtonpost.com/lifes...line_manual_35 And a bit about how the masks were developed and how they work, iirc. Thanks! |
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