FR42832E
(en )
1933-11-04
Manufacturing process of artificial cellulose sponges
BE384100A
(en )
1931-12-31
Manufacturing process of artificial casings
FR698138A
(en )
1931-01-27
Manufacturing process of mincers
FR666584A
(en )
1929-10-03
Manufacturing process of artificial textiles
FR715462A
(en )
1931-12-03
Manufacturing process of artificial cellulose sponges
FR726148A
(en )
1932-05-23
Manufacturing process of artificial resins
FR681283A
(en )
1930-05-13
Manufacturing process of mégissés leathers
FR674702A
(en )
1930-01-31
Process of making pâtés
FR729742A
(en )
1932-07-30
Manufacturing process of ketones
FR638537A
(en )
1928-05-26
Manufacturing process of artificial casings
FR724105A
(en )
1932-04-22
Manufacturing process of 1-aryl-1-chloro-ethanes
FR669245A
(en )
1929-11-13
Manufacturing process of artificial masses
FR691357A
(en )
1930-10-21
Manufacturing process of artificial masses
FR731219A
(en )
1932-08-31
Manufacturing process of artificial bodies
FR715009A
(en )
1931-11-24
Chlorobenzol manufacturing process
FR720646A
(en )
1932-02-22
Manufacturing process of 3-menthene
FR653836A
(en )
1929-03-28
Manufacturing process of artificial heather
FR782195A
(en )
1935-05-31
Manufacturing process of artificial resins
FR714124A
(en )
1931-11-07
Manufacturing process of artificial viscose silk
FR634963A
(en )
1928-03-03
Manufacturing process of artificial flowers
FR698466A
(en )
1931-01-31
Manufacturing process of imitation marble
FR682134A
(en )
1930-05-23
Manufacturing process of artificial materials
FR726486A
(en )
1932-05-30
Manufacturing process of sound films
FR711595A
(en )
1931-09-12
Manufacturing process of 1, 4 dioxane
FR648140A
(en )
1928-12-05
Manufacturing process of sulfacids