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"I'm strictly an ivory-tower person. I can explain things but I can't do things."
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![]() As far as I know, the oxygen concentrator technology didn't become popular until the 1970's. This is an extension of the idea of a hyperbaric chamber, which dates from the early 1900's.
Compare to the oxygen hip flask from Earth (1990) by David Brin. Comment/Join this discussion ( 0 ) | RSS/XML | Blog This | Additional
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