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Bunkers specially adapted for mining purposes
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Industry
CPC
E21F13/045
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21F
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
E21F13/00
Transport specially adapted to underground conditions
Current Industry
E21F13/045
Bunkers specially adapted for mining purposes
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last 30 patents
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Patent Application
CONTINUOUS-EXTRACTION MINING SYSTEM
Publication number
20140286738
Publication date
Sep 25, 2014
Joseph J. Zimmerman
E21 - EARTH DRILLING MINING