CH46874A
(en )
1910-05-02
Auxiliary tool for drilling machines to prevent holes being drilled too deep into the workpieces
GB190402443A
(en )
1905-01-26
Improvements in or relating to Deep Boring Apparatus.
GB190621761A
(en )
1907-08-01
Improvements in Apparatus for Forming or Sharpening Rock Drills or Drill Bits
AU621306B
(en )
1906-12-04
Improvements in hammer drills
AU710906B
(en )
1907-02-26
Improvements in hammer drills
FR402773A
(en )
1909-10-16
Tool that can be used as drill and drilling machine
GB190601748A
(en )
1906-08-09
Improvements in Rock Drills
CH33253A
(en )
1905-11-15
Tool box including tools for jewelers, gold workers, etc.
CH35366A
(en )
1906-12-15
Blasting tool for locksmith work
CH36203A
(en )
1906-12-15
Blasting tool for locksmith work
FR357403A
(en )
1905-12-27
Double eccentric drill bit for drilling
FR365938A
(en )
1906-09-22
Machine tool for milling, dressing, reaming, drilling and similar operations of metals
GB190621646A
(en )
1907-06-13
Improvements in Pneumatic Rock Drills
CH32143A
(en )
1905-06-30
Device for grinding stick drills of embroidery machines located on the drill rail
AT46574B
(en )
1911-02-25
Device for lifting drill pipes.
CA96749A
(en )
1905-12-26
Machine for making and sharpening rock drills
AT49017B
(en )
1911-07-25
Tool for removing scale, esp. for rock drilling purposes or the like.
CH64996A
(en )
1914-05-16
Device for the automatic driving of drills, screwdrivers and similar tools
AU117304B
(en )
1905-08-08
Improvements in diamond drill boring apparatus
GB190621666A
(en )
1907-09-19
Improvements in Rock Drilling Machines
CH36846A
(en )
1907-03-15
Tool for rolling grooves and cutting off pipes
AU469205B
(en )
1906-10-23
Improvements in rock drilling machines
AU333305B
(en )
1906-01-16
Improvements in rock drilling machines
AU1483109B
(en )
1910-01-01
Improvements in hammer drills
ES38317A1
(en )
1906-07-01
Improvements in rock drills and other percussion tools.