APPARATUS FOR THE LINKING OF GUARD ELEMENTS IN AN UNDERGROUND CAVE MAINLY IN MINES
FERENCSIN,IMRE, SZALAI,JOZSEF, BAKOS,FERENCNE, SANTA,BELA, UITZ,LASZLO, GERI,ISTVAN, SZAM,FERENC, SELYEM,JANOS, GASZNER,LASZLO, KARDICS,ISTVAN, SZIRTES,LASZLO, BODNAR,IMRE, KOVACS,TAMAS, HAVELDA,TAMAS
Year of Publication 28.05.1997
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Year of Publication 28.05.1997
Patent