CA376251A
(fr )
1938-09-06
Procede a raffiner des composes a action capillaire
CA373358A
(fr )
1938-04-26
Procede de galvanoplastie
CA371444A
(fr )
1938-01-25
Methode de raffinage du plomb
CA376915A
(fr )
1938-10-04
Procede a traiter les matieres d'egout
CA378575A
(fr )
1938-12-27
Raffinage des sulfures d'olefines
CA371134A
(fr )
1938-01-11
Compose chimique
CA377283A
(fr )
1938-10-25
Compose chimique
CA372970A
(fr )
1938-04-05
Compose pseudoazimide
CA374289A
(fr )
1938-06-07
Compose fibres et caoutchouc
CA375892A
(fr )
1938-08-23
Procede a raffiner la cellulose
CA377327A
(fr )
1938-10-25
Sulfonation de composes organiques
CA378506A
(fr )
1938-12-27
Graisse a patisseries
CA378507A
(fr )
1938-12-27
Graisse a patisseries
CA371121A
(fr )
1938-01-11
Procede de raffinage d'hydrocarbures
CA372298A
(fr )
1938-03-08
Procede chimique
CA378158A
(fr )
1938-12-06
Compose explosif
CA375216A
(fr )
1938-07-19
Procede a raffiner la cire
CA373250A
(fr )
1938-04-19
Procede de distillation
CA372811A
(fr )
1938-03-29
Procede d'affinage de metal
CA378569A
(fr )
1938-12-27
Styphnate de plomb
CA377141A
(fr )
1938-10-18
Production de pate chimique a papier
CA378256A
(fr )
1938-12-13
Compose de la serie d'azaphenanthrone
CA374534A
(fr )
1938-06-21
Procede contre le decalquage
CA371155A
(fr )
1938-01-11
Procede de raffinage du magnesium
CA371494A
(fr )
1938-01-25
Methode a augmenter la production de gazoline