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US5018580A
(en)
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|
Section milling tool
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DK172827B1
(da)
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Værktøj til dannelse af gevindskæring af et hul
|
|
US1747117A
(en)
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|
Method of making multiple diameter cut tools
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|
US4475850A
(en)
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Split helix router bit
|
|
HU229112B1
(en)
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|
Thread milling tool having helical flutes
|
|
EP0287183B1
(en)
|
|
Tubular element for use in a rotary drilling assembly
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|
SU154841A1
(enrdf_load_html_response)
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|
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WO2016186516A1
(en)
|
|
Milling tool with self driven active side cutters
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|
US1955768A
(en)
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|
Coal auger bit
|
|
US5174391A
(en)
|
|
Tubular element for use in a rotary drilling assembly and method
|
|
US1489849A
(en)
|
|
Well tool
|
|
CN211598525U
(zh)
|
|
破壁扩径复合式钻头
|
|
US3995706A
(en)
|
|
Earth auger drill
|
|
US10563472B2
(en)
|
|
Rotary milling tool
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|
CN212985114U
(zh)
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|
一种预处理钻孔结构
|
|
RU2268348C1
(ru)
|
|
Буровая коронка
|
|
US2902259A
(en)
|
|
Percussion drill bit and method of producing it
|
|
CN213016190U
(zh)
|
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一种井下随钻扩眼器
|
|
RU2338865C2
(ru)
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|
Коронка бурильная
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|
RU2342514C1
(ru)
|
|
Головка бурильная
|
|
CN219034625U
(zh)
|
|
一种适用于盐岩地区的旋挖机钻头
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DE317125C
(enrdf_load_html_response)
|
|
|
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SU1160002A1
(ru)
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|
Бурова коронка
|
|
US372463A
(en)
|
|
Cavity drill or reamer |
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CH643031A5
(de)
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Bohrwerkzeug fuer eine gesteinsbohrmaschine.
|