IL37497A0
(en )
1971-11-29
Improvements in or relating to pillars
HK47276A
(en )
1976-07-30
Improvements in or relating to aerators
ZA713261B
(en )
1972-01-26
Improvements in or relating to structural members
ZA716948B
(en )
1973-06-27
Improvements in or relating to mechanisms
ZA716950B
(en )
1972-06-28
Improvements in or relating to manhole assemblies
ZA711543B
(en )
1972-08-30
Improvements in or relating to insulating materials
ZA701251B
(en )
1971-04-28
Improvements in or relating to clamping means
AU1513570A
(en )
1971-11-18
Improvements in or relating to concrete casting
ZM5570A1
(en )
1972-08-21
Improvements in or relating to concrete casting
ZA712556B
(en )
1972-01-26
Improvements in or relating to pipes
ZA713561B
(en )
1972-01-26
Improvement in or relating to furnaces
ZA712296B
(en )
1972-11-29
Improvements in or relating to insulators
ZA718082B
(en )
1973-03-28
Improvements in or relating to the casting of concrete of the like
ZA71761B
(en )
1971-10-27
Improvements in or relating to buildings
ZA711485B
(en )
1971-11-24
Improvements in and relating to concrete elements and the production thereof
ZA716020B
(en )
1972-05-31
Improvements in or relating to tiling
ZA705961B
(en )
1971-10-27
Improvements in or relating to swimming aids
ZA71202B
(en )
1971-10-27
Improvements in or relating to screw-pumps
ZA715957B
(en )
1972-09-27
Further improvements in or relating to pallets
ZA701107B
(en )
1971-05-27
Improvements in or relating to building blocks
ZA701090B
(en )
1971-05-27
Improvements in or relating to building blocks
ZA718212B
(en )
1973-02-28
Improvements in or relating to casting
ZA704129B
(en )
1971-07-28
Improvements in or relating to paving blocks
ZA704658B
(en )
1971-09-29
Improvements in or relating to sun-visors
ZA713685B
(en )
1972-01-26
Improvements in or relating to sulphonylsemicarbazides