|
FI86760B
(fi)
|
|
Borrverktyg.
|
|
FI96356B
(fi)
|
|
Porausmenetelmä ja teräasetelma menetelmän toteuttamiseksi
|
|
US4071101A
(en)
|
|
Stabilizer for single or dual tube drilling
|
|
US3847236A
(en)
|
|
Drill bit
|
|
US2324353A
(en)
|
|
Roller tip for fishing rods
|
|
CN109372457A
(zh)
|
|
取心和无心钻进不提钻转换钻具
|
|
GB2032494A
(en)
|
|
Drilling Arrangement for Earth Drilling
|
|
US5823274A
(en)
|
|
Drill rod
|
|
CA2550801C
(en)
|
|
Drilling equipment
|
|
PL59635B1
(enrdf_load_stackoverflow)
|
|
|
|
US3703909A
(en)
|
|
Drilling apparatus
|
|
US2914306A
(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)
|
|
Roller bit
|
|
US1657317A
(en)
|
|
Hammer rock drill
|
|
CN114382432B
(zh)
|
|
一种中空螺杆钻具总成
|
|
CN208294529U
(zh)
|
|
一种可拆卸式掘进机截齿
|
|
US1586415A
(en)
|
|
Rotary core drill
|
|
CA2183870A1
(en)
|
|
An apparatus for drilling open a tunnel and drilling method
|
|
FI98649C
(fi)
|
|
Menetelmä reiän poraamiseksi ja sovitelma menetelmän toteuttamiseksi
|
|
SE8302376L
(sv)
|
|
Bladberande ram till maskiner for sagning av marmor, granit och hard sten
|
|
US1962961A
(en)
|
|
Apparatus for drilling well casings
|
|
AU5961799A
(en)
|
|
swivel chamber for water actuated wireline drills
|