CA386837A
(fr )
1940-02-13
Lampe photoelectrique
CA390314A
(fr )
1940-07-30
Lampe photo-electrique
CA386768A
(fr )
1940-02-06
Lampe photoelectrique
CA394952A
(fr )
1941-03-04
Lampe photo-electrique
CA396326A
(fr )
1941-05-06
Lampe photoelectrique
CA388240A
(fr )
1940-04-23
Lampe photoelectrique
CA388561A
(fr )
1940-05-07
Lampe photoelectrique
CA388841A
(fr )
1940-05-21
Lampe photoelectrique
CA390413A
(fr )
1940-07-30
Methode d'etirage de tubes
CA386076A
(fr )
1940-01-02
Lampe thermionique
CA391721A
(fr )
1940-10-01
Lampe de television
CA391556A
(fr )
1940-10-01
Tube de drainage
CA395201A
(fr )
1941-03-11
Lampe photoelectrique
CA395918A
(fr )
1941-04-15
Lampe photo-electrique
CA389768A
(fr )
1940-07-02
Lampe a electrons
CA390888A
(fr )
1940-08-20
Lampe a colonne positive
CA387737A
(fr )
1940-04-02
Porte-tube
CA390500A
(fr )
1940-08-06
Dispositif a fabriquer des tubes
CA386917A
(fr )
1940-02-20
Chambre d'air de pneu
CA376408A
(fr )
1938-09-13
Lampe photo-electrique
CA391692A
(fr )
1940-10-01
Faux-col
CA393480A
(fr )
1940-12-31
Lampe a rayons-x
CA386403A
(fr )
1940-01-16
Arsenobenzene-monosulfoxylate
CA389138A
(fr )
1940-06-04
Mercapto-aryle-thiazole
CA386375A
(fr )
1940-01-16
4-alcoyle-5-hydroxyalcoylethiazole