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FI86760B
(fi)
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Borrverktyg.
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US4071101A
(en)
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Stabilizer for single or dual tube drilling
|
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US3703212A
(en)
|
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Method of rock drilling and apparatus for use therein
|
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CN109372457A
(zh)
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取心和无心钻进不提钻转换钻具
|
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US3847236A
(en)
|
|
Drill bit
|
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US2324353A
(en)
|
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Roller tip for fishing rods
|
|
FI103688B
(fi)
|
|
Poratanko
|
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PL59635B1
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
|
|
|
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US3703909A
(en)
|
|
Drilling apparatus
|
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(en)
|
|
Fluid circulating drilling barrel
|
|
JP2870943B2
(ja)
|
|
衝撃機械装置
|
|
US3198267A
(en)
|
|
Method and apparatus for controlling dust in a rotary drilling operation
|
|
PL129839B1
(en)
|
|
Apparatus for preventing dust penetration through an annular gap between the arm and head of cutting machine inside the cutting head
|
|
US2335929A
(en)
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Roller bit
|
|
CN114382432B
(zh)
|
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一种中空螺杆钻具总成
|
|
US1657317A
(en)
|
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Hammer rock drill
|
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CA2290277C
(en)
|
|
Swivel chamber for water actuated wireline drills
|
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CA2183870A1
(en)
|
|
An apparatus for drilling open a tunnel and drilling method
|
|
CN210422529U
(zh)
|
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一种销挂防磨多用密闭取芯工具
|
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FI98649C
(fi)
|
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Menetelmä reiän poraamiseksi ja sovitelma menetelmän toteuttamiseksi
|
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SE8302376L
(sv)
|
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Bladberande ram till maskiner for sagning av marmor, granit och hard sten
|
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RU2182640C1
(ru)
|
|
Шарошечное долото
|
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US1962961A
(en)
|
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Apparatus for drilling well casings
|
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SU71783A1
(ru)
|
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Устройство дл ударно-вращательного бурени скважин
|
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CN221590953U
(zh)
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钻杆套洗装置
|