ZA706657B
(en )
1971-09-29
Improvements in or relating to walls screens and the like
ZA706917B
(en )
1971-07-28
Improvements in or relating to slings,tow-ropes,and the like
ZM1471A1
(en )
1972-01-21
Improvements in and relating to water-bearing explosives
ZA705509B
(en )
1971-04-28
Improvements in or relating to hoses
MY7600117A
(en )
1976-12-31
Improvements in and relating to explosives
ZA707095B
(en )
1971-11-24
Improvements in or relating to railfastening devices
ZA7063B
(en )
1971-08-25
Improvements in or relating to building construction and elements for use therein
GB1242040A
(en )
1971-08-11
Improvements in or relating to grinding devices
ZA703874B
(en )
1971-01-27
Improvements in and relating to pyrotechnic devices
ZA702211B
(en )
1971-09-29
Improvements in or relating to stud-welding
ZA729105B
(en )
1973-09-26
Improvements in or relating to mortars and the like
HK2879A
(en )
1979-01-19
Improvements in or relating to pocket torches
ZA707147B
(en )
1972-09-27
Improvements in or relating to audio-sensitive devices
ZA708503B
(en )
1971-12-29
Improvements in or relating to protection initiating arrangements
AU1471670A
(en )
1971-11-11
Improvements in and relating to pyrotechnic devices
ZA693618B
(en )
1971-02-24
Improvements in or relating to blasting in mines and the like
ZA704177B
(en )
1971-03-31
Improvements in or relating to furnaces
HK9777A
(en )
1977-03-04
Improvements in and relating to pyrotechnic devices
ZA708723B
(en )
1971-10-27
Improvements in or relating to mining
ZA704349B
(en )
1971-04-28
Improvements in or relating to polyurethanes
ZA703304B
(en )
1971-12-29
Improvements in or relating to steroids
ZA703273B
(en )
1971-10-27
Improvements in or relating to explosive charges
ZA705561B
(en )
1971-05-27
Improvements in or relating to the separation of metallic valuables
ZA694554B
(en )
1971-02-24
Improvements in explosive compositions and their use
ZA705959B
(en )
1971-04-28
Blasting wheel and blades therefor