Category : [IPC] E21

Category Path : IPC Category » [IPC] E 고정구조물 » [IPC] E21
Words Count : 537

Korean Description : 지표 또는 암석의 굴착(掘鑿); 채광(採鑛)
US Description : EARTH OR ROCK DRILLING; MINING
Japanese Description : 地中もしくは岩石の削孔;採鉱


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