FR1212189A
(en )
1960-03-22
Glass making refinements
BE615774A
(en )
1962-10-01
Improvements relating to the manufacture of flat glass
FR1142488A
(en )
1957-09-18
Improvements in the manufacture of glass containing tellurium
BE594448A
(en )
1961-02-27
Improvements relating to the manufacture of flat glass.
FR1233368A
(en )
1960-10-12
Glass making refinements
FR1231129A
(en )
1960-09-27
Improvements in the manufacture of glass sheets
BE615773A
(en )
1962-10-01
Improvements in the manufacture of flat glass
FR1370895A
(en )
1964-08-28
Improvements made to or relating to the manufacture of flat glass
FR1223064A
(en )
1960-06-15
Improvements in the manufacture of glass tubes
FR1323711A
(en )
1963-04-12
Further training in the manufacture of flat glass
BE609251A
(en )
1962-04-17
Glass manufacturing
FR1341687A
(en )
1963-11-02
Improvements in the continuous manufacture of flat glass by drawing
FR1259364A
(en )
1961-04-28
Improvements in tube manufacturing
BE578219A
(en )
1959-08-17
Improvements in the manufacture of glass tubes
FR1211098A
(en )
1960-03-14
Further training in glass making
FR1243376A
(en )
1960-10-07
Improvements in the manufacture of glass sheets
BE594447A
(en )
1961-02-27
Improvements relating to the manufacture of flat glass.
BE589306A
(en )
1960-08-01
Improvement in the manufacture of drawn sheet glass.
FR1206818A
(en )
1960-02-11
Improvements in the manufacture of tubular glass containers
BE581926A
(en )
1960-02-22
Glass making refinements
FR1179368A
(en )
1959-05-22
Improvement in the manufacture of tempered glass sheets
FR1225866A
(en )
1960-07-06
Improvements in the manufacture of finned tubes
FR1313076A
(en )
1962-12-28
Improvements in the manufacture of sheet glass by drawing
FR1249888A
(en )
1961-01-06
Improvements in the manufacture of plastic <<glazing>>
FR1173735A
(en )
1959-03-02
Improvements in the manufacture of pentaerythritis