FR1313216A
(en )
1962-12-28
Improvements in the manufacture of concrete elements
FR1265655A
(en )
1961-06-30
Improvements in the manufacture of ammonium sulphate
BE605867A
(en )
1962-01-08
Improvements in the manufacture of ammonium sulphate
FR1305488A
(en )
1962-10-05
Further development in the manufacture of pure antimony
FR1271227A
(en )
1961-09-08
Improvements in the manufacture of valves and valves resulting therefrom
BE600839A
(en )
1961-07-03
Improvements in the manufacture of ammonium sulphate.
FR1296647A
(en )
1962-05-14
Improvements in the manufacture of heavy esters
BE598704A
(en )
1961-06-30
Improvements in the manufacture of urea
FR1288279A
(en )
1962-03-24
Improvements in the production of ammonium sulphate
FR1220251A
(en )
1960-05-24
Improvement in the manufacture of solid alumina sulphate
FR1217900A
(en )
1960-05-06
Further development in the manufacture of succinic anhydride
FR1205976A
(en )
1960-02-05
Further development in the manufacture of synthetic elastomers
FR1152535A
(en )
1958-02-19
Improvement in the manufacture of nitric acid
FR1218577A
(en )
1960-05-11
Improvements in the manufacture of cumene hydroperoxide
FR1276633A
(en )
1961-11-17
Improvements in the manufacture of urea
FR1245315A
(en )
1960-11-04
Improvements in the fabrication and erection of structures
FR1255242A
(en )
1961-03-03
Improvements in the production of glucinium
FR1302419A
(en )
1962-08-31
Further development in the manufacture of hydrazine
FR1323860A
(en )
1963-04-12
Improvements in the manufacture of fertilizer compositions
FR1239708A
(en )
1960-08-26
Improvements in the manufacture of granular fertilizers
FR1168683A
(en )
1958-12-12
Improvements in the manufacture of granulated ammonium nitrate
FR1259793A
(en )
1961-04-28
Improvements in the manufacture of granular fertilizers
FR1226779A
(en )
1960-08-16
Further development in the manufacture of synthetic elastomers
BE585645A
(en )
1960-06-14
Improvements in the manufacture of cumene hydroperoxide
FR1111321A
(en )
1956-02-24
Further training in the manufacture of potassium sulphate