ZA913237B
(en )
1992-04-29
Rock bit for a down-the-hole drill
ZA877538B
(en )
1988-06-29
Drill rod for percussion drilling
GB2154497B
(en )
1987-07-08
Hand machine tool, particularly hammer drill or percussion drill
SG72194G
(en )
1994-11-25
Percussion rock bit
YU114782A
(en )
1986-06-30
Hammer drilling machine for percussive drilling
IT8567187A0
(en )
1985-02-25
DRILL HOLDER FOR PERCUSSION DRILLING
EP0242728A3
(en )
1989-02-22
Coring tool for rock drilling
EP0347602A3
(en )
1990-06-06
Rock drill bit rock drill bit
DE3562118D1
(en )
1988-05-19
Drill chuck, particularly for percussive boring
GB8808131D0
(en )
1988-05-11
Hammer drills for making boreholes
ZA924617B
(en )
1994-05-27
A percussion drill bit
IT8567004A0
(en )
1985-01-03
DRILL CHUCK FOR PERCUSSION DRILLING
GB9316855D0
(en )
1993-09-29
Drilling device for a rock drill
IT8567419A0
(en )
1985-05-08
DRILL HOLDER FOR A HAMMER DRILLING TOOL
EP0147830A3
(en )
1987-07-22
Drill for a hand-held drilling machines
GB2136723B
(en )
1986-07-23
Drill chuck for percussion drilling operation
ZA854560B
(en )
1986-02-26
A coupling arrangement for a drill shank of a percussion drilling machine
AU590456B2
(en )
1989-11-02
Damping device for a percussion rock drilling machine
ZA794072B
(en )
1980-08-27
A drilling machine,especially a rock drill
ZA832901B
(en )
1984-01-25
Lubrication system for a drill rod shank in a percussion drilling machine
GB2148776B
(en )
1987-06-03
Fluid operated percussion drilling machine
ZA904380B
(en )
1991-03-27
Rock drilling bit
DE3170516D1
(en )
1985-06-20
Drill, particularly for rotary percussion drilling
GB8824546D0
(en )
1988-11-23
Rotary drill bit for drilling through sticky formations
GB8727629D0
(en )
1987-12-31
Shank adaptor for rock drilling machines