AU104479B2
(en )
1938-07-21
Improvements in and relating to , drill shafts and detachable bits for use with rock drills
AU509837A
(en )
1938-07-21
Improvements in and relating to , drill shafts and detachable bits for use with rock drills
AU109747B2
(en )
1940-02-22
Improvements in and relating to drill shafts, drill bits, adaptors andother connectors for use with percussive drills
AU111483B2
(en )
1940-09-19
Improvements in detachable drill bits and shafts for use with rock drills
AU16139A
(en )
1940-02-22
Improvements in and relating to drill shafts, drill bits, adaptors andother connectors for use with percussive drills
FR777596A
(en )
1935-02-22
Improvements made to bits, drills, reamers, taps and similar tools
AU53240A
(en )
1940-09-19
Improvements in detachable drill bits and shafts for use with rock drills
AU2447535A
(en )
1936-05-14
Improvements in, or relating to, drill shafts and bits adapted tobe used with percussive drills
AU103458B2
(en )
Improvements in or relating to rock drills and like tools
AU113214B2
(en )
1941-06-12
Improvements in or relating to rock drills having detachable bits
AU112702B2
(en )
1941-03-20
Improvements in or relating to detachable bits for rock drills
AU443940A
(en )
1941-06-12
Improvements in or relating to rock drills having detachable bits
AU112173B2
(en )
1941-01-09
Improvements in and relating to rock and like drills
AU111892B2
(en )
1939-07-27
Improvements in and relating to rock and like drills
AU1052232A
(en )
1933-06-29
Improvements in or relating to rock drills and like tools
AU103459B2
(en )
Inmptvements in o rielatiirg to fluid-actuated rock drills or like tools
AU109059B2
(en )
1939-11-23
Improvements in or relating to rock drills
AU102667B2
(en )
1937-12-16
Improvements in or relating to rock drilling devices
AU108513B2
(en )
Improvements in rock drill bits
AU107324B2
(en )
1939-05-18
Improvements in and relating to rock drills andthe like
AU112218B2
(en )
1941-01-09
Improvements in, and relating to, rock drills
AU190339A
(en )
1939-07-27
Improvements in and relating to rock and like drills
AU561439A
(en )
1941-01-09
Improvements in and relating to rock and like drills
AU220539A
(en )
1939-11-23
Improvements in or relating to rock drills
AU202437A
(en )
1937-12-16
Improvements in or relating to rock drilling devices