CA396409A
(fr )
1941-05-06
Procede a enlever le mercaptan
CA401816A
(fr )
1941-12-30
Procede de distillation
CA399087A
(fr )
1941-09-02
Procede a mouler
CA400623A
(fr )
1941-11-11
Procede de moulage
CA396920A
(fr )
1941-06-03
Procede a tanner
CA396921A
(fr )
1941-06-03
Procede a tanner
CA394271A
(fr )
1941-01-28
Procede de gravure
CA394245A
(fr )
1941-01-28
Galvanoplastie
CA401286A
(fr )
1941-12-09
Procede de galvanoplastie
CA401780A
(fr )
1941-12-30
Procede de galvanoplastie
CA401830A
(fr )
1941-12-30
Procede de galvanoplastie
CA401831A
(fr )
1941-12-30
Procede de galvanoplastie
CA400450A
(fr )
1941-11-04
Procede a miner les puits
CA399417A
(fr )
1941-09-16
Procede a former du cuir regenere
CA396086A
(fr )
1941-04-22
Procede de fusion
CA396673A
(fr )
1941-05-20
Procede a enlever les bases de l'eau
CA398830A
(fr )
1941-08-26
Procede de polymerisation
CA400094A
(fr )
1941-10-21
Procede de polymerisation
CA401454A
(fr )
1941-12-16
Procede de recuperation de reactifs
CA400437A
(fr )
1941-11-04
Procede d'extraction de zeine
CA396754A
(fr )
1941-05-27
Procede d'ornementation
CA395221A
(fr )
1941-03-11
Procede a tirer des photographies
CA400051A
(fr )
1941-10-21
Procede de separation de l'huile
CA394004A
(fr )
1941-01-21
Procede de galvanoplastie
CA401511A
(fr )
1941-12-16
Procede a imprimer