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Pressure breathing O2 regulator these days?



 
 
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Old November 16th 14, 11:48 PM posted to rec.aviation.soaring
Bill D
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Default Pressure breathing O2 regulator these days?

On Sunday, November 16, 2014 4:04:40 PM UTC-7, Frank Whiteley wrote:
Have bothered to check on the A-14, but while I was looking at mask images I saw one with an A-14 dated 1944, so I suspect they were a WWII development, perhaps earlier.

Frank Whiteley


History of US WWII military oxygen systems he
http://goo.gl/teVK96
 




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