YIELDABLE ROOF BOLT
RENKEL ALEKSEJ F,SU, SHCHERBAKOV STANISLAV M,SU, BORODAVKIN VLADIMIR P,SU, BORODAVKIN PETR P,SU
Year of Publication 30.10.1989
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Year of Publication 30.10.1989
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ROOF BOLT
RENKEL ALEKSEJ F,SU, SHCHERBAKOV STANISLAV M,SU, BORODAVKIN VLADIMIR P,SU, BORODAVKIN PETR P,SU
Year of Publication 15.06.1989
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Year of Publication 15.06.1989
Patent
THRUST ROOF BOLT
RENKEL ALEKSEJ F,SU, BORODAVKIN VLADIMIR P,SU, SHCHERBAKOV STANISLAV M,SU, BORODAVKIN PETR P,SU
Year of Publication 07.02.1989
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Year of Publication 07.02.1989
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