Method and apparatus for controlling the atmosphere of an essentially closed space
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United States of America Patent
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Jan 19, 1999
Grant Date -
N/A
app pub date -
May 13, 1996
filing date -
Nov 9, 1993
priority date (Note) -
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Abstract
The invention relates to a method for regulating the atmosphere in a substantially closed sports/exercise space (1) or an animal shelter (11), especially in terms of partial oxygen pressure. In the method, the normal atmosphere of said space (1; 11) is admixed with nitrogen for the creation of a desired low-oxygen (oxygen content
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