SUBSURFACE SAFETY VALVE
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| creator | BESPALOV VALERIJ I,SU BELOV VLADIMIR P,SU TSARKOV IGOR V,SU |
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| format | Patent |
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| language | eng ; rus |
| recordid | cdi_epo_espacenet_RU1788215C |
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| subjects | EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS |
| title | SUBSURFACE SAFETY VALVE |
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