FR831955A
(en )
1938-09-16
Process improvements for the production of pigments
FR845932A
(en )
1939-09-05
Improvements in processes for the manufacture of artificial materials
FR816205A
(en )
1937-08-03
Improvements in processes for the manufacture of pure cellulose
FR821071A
(en )
1937-11-26
Improvements to the processes for the manufacture of artificial slates intended for schoolchildren
FR654554A
(en )
1929-04-08
Improvements in processes for the manufacture of artificial materials
FR826939A
(en )
1938-04-13
Improvements in processes for the manufacture of neutral mixed fertilizers
FR832518A
(en )
1938-09-28
Fiexible pipe and machine for the manufacture of this pipe
FR826245A
(en )
1938-03-25
Improvements in processes for the manufacture of mixed fertilizers
FR846992A
(en )
1939-09-28
Improvements to processes for the production of polarizing materials
FR828062A
(en )
1938-05-10
Improvements in the trades used for the manufacture of lace
FR840460A
(en )
1939-04-26
Improvements to materials for the manufacture of dentures
FR864748A
(en )
1941-05-03
Improvements in processes for the manufacture of levulic acid
FR805688A
(en )
1936-11-26
Improvements in processes and means for the manufacture of shoes
FR826938A
(en )
1938-04-13
Improvements in processes for the reduction of magnesium sulphate
FR752200A
(en )
1933-09-18
Improvements in processes to obtain the bonding of materials
FR820835A
(en )
1937-11-19
Improvements to containers and the processes for manufacturing them
FR730236A
(en )
1932-08-09
Improvements in artificial materials and the processes for manufacturing them
FR835139A
(en )
1938-12-13
Improvements in the manufacture of films of alginic material
FR837642A
(en )
1939-02-15
Improvements in the manufacture of filter blocks
FR823016A
(en )
1938-01-12
Construction materials and process for the manufacture thereof
FR780368A
(en )
1935-04-25
Improvements to the pipes and to the manufacturing processes of said pipes
FR782546A
(en )
1935-06-06
Improvements in processes for the manufacture of alkaline orthophosphates
FR749709A
(en )
1933-07-28
Improvements in the manufacture of artificial materials
FR749913A
(en )
1933-08-01
Improvements in the manufacture of artificial materials
FR818384A
(en )
1937-09-24
Improvements in methods for manufacturing valve bodies or the like