US Patent 7533942 Mine refuge
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Patent abstract
A mine refuge for use in a mine includes a chamber sized and shaped for occupancy by at least one miner. An oxygen supply is adapted to be installed in the chamber for supplying oxygen to the chamber. A carbon dioxide reduction system is adapted to be installed in the chamber for reducing carbon dioxide in the chamber. The carbon dioxide reduction system is operable in the mine without an electrical power source.
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US Patent 07533942 Mine refuge US Patent 7533942 Mine refuge
Infobox
Patent Number
0753394200
Patent Number
753394200
Edits on 22 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
075339420
Date of Patent
May 19, 2009
0Patent Application Number
116250520
Date Filed
January 19, 2007
0Official Website
Patent Primary Examiner
Edits on 28 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
075339420
Date of Patent
May 19, 2009
0Patent Application Number
116250520
Date Filed
January 19, 2007
0Official Website
Patent Primary Examiner
Edits on 15 Jun, 2022
Golden AI
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US Patent 07533942 Mine refuge
Infobox
Is a
Patent jurisdiction
Patent number
07533942
Date of patent
May 19, 2009
Patent application number
11625052
Date Filed
January 19, 2007
Patent primary examiner
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