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Delta Air Lines will begin accepting the Inogen One portable oxygen concentrator for customers' onboard use on December 1, 2005. The customer-owned devices are lightweight and portable and used in lieu of medical oxygen bottles.
http://us.rd.yahoo.com/finance/news/rss/st...1128/90280.html
http://us.rd.yahoo.com/finance/news/rss/st...1128/90280.html