ZA731896B
(en )
1974-05-29
Improvements in or relating to ozonisers
ZA706973B
(en )
1971-07-28
Improvements in or relating to type-printing mechanisms
HK47276A
(en )
1976-07-30
Improvements in or relating to aerators
ZA716948B
(en )
1973-06-27
Improvements in or relating to mechanisms
HK8379A
(en )
1979-02-23
Improvements in or relating to thienobenzazepines
ZA702211B
(en )
1971-09-29
Improvements in or relating to stud-welding
ZA706304B
(en )
1971-07-28
Improvements in or relating to the treatment of leather
ZA711445B
(en )
1972-08-30
Improvements in or relating to shoemaking
ZA715458B
(en )
1972-04-26
An improvement in or relating to waste and water treatment system
ZA723068B
(en )
1973-02-28
Improvements in or relating to wellpoints
ZA712556B
(en )
1972-01-26
Improvements in or relating to pipes
ZA727539B
(en )
1973-07-25
Improvements in or relating to shower assemblies
ZA706286B
(en )
1971-08-25
Improvements in or relating to water treatment
ZA717662B
(en )
1972-08-30
Improvements in or relating to cleansing treatments
ZA705961B
(en )
1971-10-27
Improvements in or relating to swimming aids
ZA716020B
(en )
1972-05-31
Improvements in or relating to tiling
ZA711441B
(en )
1971-12-29
Improvements in or relating to water closets
ZA71202B
(en )
1971-10-27
Improvements in or relating to screw-pumps
ZA71982B
(en )
1972-09-27
Improvements in or relating to the treatment of polluted water
MTP639B
(en )
1970-07-22
Improvements relating to the treatment of mastits in cows
HK13376A
(en )
1976-03-19
Improvements in or relating to the treatment of hair
ZA708686B
(en )
1971-09-29
Improvements in or relating to beds
ZA713685B
(en )
1972-01-26
Improvements in or relating to sulphonylsemicarbazides
ZA714284B
(en )
1972-08-30
Improvements in or relating to fuse-holders
ZA705172B
(en )
1971-12-29
Improvements in or relating to braais