CA432579A
(fr )
1946-01-15
Recuperation de composes organiques halogenes
CA387671A
(fr )
1940-03-26
Recuperation d'oxy-composes organiques
CA386492A
(fr )
1940-01-23
Recuperation de phosphatovanadate
CA392093A
(fr )
1940-10-22
Compose organique
CA390234A
(fr )
1940-07-23
Recuperation d'acetylene
CA391503A
(fr )
1940-09-24
Rallonge de meche
CA398169A
(fr )
1941-07-22
Recuperation de composes organiques
CA390908A
(fr )
1940-08-27
Production de composes organiques
CA392366A
(fr )
1940-11-05
Production de composes organiques
CA388607A
(fr )
1940-05-14
Perforatrice de mine
CA392662A
(fr )
1940-11-19
Fabrication de composes organiques
CA392663A
(fr )
1940-11-19
Fabrication de composes organiques
CA389454A
(fr )
1940-06-18
Acide organique
CA389891A
(fr )
1940-07-09
Recuperation du caoutchouc
CA388933A
(fr )
1940-05-28
Recuperation du phenol
CA387316A
(fr )
1940-03-05
Perforatrice a roc
CA388216A
(fr )
1940-04-23
Perforatrice a roc
CA388540A
(fr )
1940-05-07
Perforatrice a roc
CA393457A
(fr )
1940-12-31
Perforatrice a roc
CA392113A
(fr )
1940-10-29
Recuperation d'huile
CA386908A
(fr )
1940-02-13
Bourrelet de porte, etc.
CA387521A
(fr )
1940-03-19
Coupe-froid
CA387981A
(fr )
1940-04-16
Boue a forage
CA392057A
(fr )
1940-10-22
Recuperation du magnesium
CA387056A
(fr )
1940-02-27
Pointe de puit