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Year of Publication 28.12.1989
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HYDRAULIC WORKING CYLINDER PARTICULARLY HYDRAULIC PROP USED IN MINING
MARTINKO JUN,MATYAS,HU, PERA,FERENC,HU, FENYOE,JOZSEF,HU, CZOMA,CSABA,HU
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Year of Publication 28.07.1989
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MARTINKO JUN,MATYAS,HU, PERA,FERENC,HU, FENYOE,JOZSEF,HU, CZOMA,CSABA,HU
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Year of Publication 29.08.1988
Patent
HYDRAULIC WORKING CYLINDER PARTICULARLY HYDRAULIC SUPPORT USED AT MINING
MARTINKO JUN,MATYAS,HU, PERA,FERENC,HU, FENYOE,JOZSEF,HU, CZOMA,CSABA,HU
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Year of Publication 30.11.1987
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CZOMA, CSABA-MASCH.., BALATONALMADI, HU, FENYO, JOZSEF-TECHN., VARPALOTA, HU, MARTINKO JUN., MATYAS, BALATONALMADI, HU, PERA, FERENC-BERGBAU DR., VESZPREM, HU
Year of Publication 16.02.1989
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Year of Publication 16.02.1989
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