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Search Results - "NI HUALONG"
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"NI HUALONG"
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Downstream movable valve cover of oil well pump
by
NI HUALONG
Year of Publication
03.07.2020
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Improved impact type oil drainage device
by
NI HUALONG
,
NI RUOFEI
Year of Publication
23.07.2024
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Pressure explosion type oil drainage device
by
NI HUALONG
,
NI RUOFEI
Year of Publication
16.07.2024
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Hydraulic anchor device
by
NI HUALONG
,
NI RUOFEI
Year of Publication
16.07.2024
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Hole sealing device for exploration drilling
by
NI HUALONG
,
ZUO FENG
,
WANG SHUSHENG
,
HAN QINGGUO
,
ZHANG DEJUN
Year of Publication
12.04.2024
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Hydraulic anchor
by
NI HUALONG
Year of Publication
19.09.2012
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Hydraulic anchor
by
NI HUALONG
Year of Publication
19.09.2012
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Hydraulic anchor
by
NI HUALONG
Year of Publication
25.07.2012
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Hydraulic anchor
by
NI HUALONG
Year of Publication
15.06.2011
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Patent
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chemistry
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medicine
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sciences
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Topic
earth drilling
9 results
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earth drilling, e.g. deep drilling
fixed constructions
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mining
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obtaining oil, gas, water, soluble or meltable materials or aslurry of minerals from wells
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blasting
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esp@cenet
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