US Patent 8007047 Mine refuge
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Patent abstract
A mine refuge for use in a mine includes a chamber having an interior space sized and shaped for occupancy by at least one person. An oxygen supply is installed in the chamber for supplying oxygen to the chamber. A mask is operatively connected to the oxygen supply and is adapted for donning by the person to supply oxygen to the person. In some embodiments, an air supply in addition to the oxygen supply is provided.
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Patent Inventor Names
John M. Kennedy0
William R. Kennedy0
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US Patent 08007047 Mine refuge US Patent 8007047 Mine refuge
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Patent Number
08007047
Patent Number
8007047
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US Patent 08007047 Mine refuge
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Is a
Patent jurisdiction
Patent number
08007047
Date of patent
August 30, 2011
Patent application number
12106705
Date Filed
April 21, 2008
Patent primary examiner
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