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Safes new invention to save the world from the virus.
Take a mask and snorkel like skin divers use. They are very cheap and last forever. Next, make a cheap filter that slides into and out of the end of the snorkel. Really, I'd only have to invent the filter that slides in and out.
I'm old and really don't need the money, so go ahead and apply for the patient and get rich and save the world.
Stay safe.
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= new reply since forum marked as read
Liking it. I give it a thumbs up. 
Sign Language books and videos.
