CA439348A
(fr )
1947-01-21
Alliage pour electrodes
CA439877A
(fr )
1947-02-25
Alliage pour contre-electrode
CA442492A
(fr )
1947-06-24
Alliage pour cathodes
CA442003A
(fr )
1947-06-10
Alliage
CA443803A
(fr )
1947-08-26
Alliage de metal pour coussinets
CA445891A
(fr )
1947-12-30
Alliage
CA445892A
(fr )
1947-12-30
Alliage
CA445893A
(fr )
1947-12-30
Alliage
CA445894A
(fr )
1947-12-30
Alliage
CA443981A
(fr )
1947-09-02
Alliage de refoulement
CA440553A
(fr )
1947-04-01
Structure d'electrode
CA443283A
(fr )
1947-07-29
Structure d'electrode
CA439297A
(fr )
1947-01-21
Fabrication d'electrodes
CA442547A
(fr )
1947-07-01
Alliage pour pierres a briquets
CA441040A
(fr )
1947-04-29
Alliage de grande resistance
CA441820A
(fr )
1947-06-03
Procede d'alliage
CA441821A
(fr )
1947-06-03
Procede d'alliage
CA441009A
(fr )
1947-04-29
Porte-electrode
CA443154A
(fr )
1947-07-29
Porte-electrode
CA442497A
(fr )
1947-06-24
Cathode
CA432892A
(fr )
1946-01-29
Alliage
CA436281A
(fr )
1946-08-06
Alliage
CA443491A
(fr )
1947-08-05
Support d'electrode
CA441573A
(fr )
1947-05-20
Anode
CA441700A
(fr )
1947-05-27
Anode