CA392047A
(fr )
1940-10-22
Modulateur de lampe thermionique
CA386076A
(fr )
1940-01-02
Lampe thermionique
CA389768A
(fr )
1940-07-02
Lampe a electrons
CA390377A
(fr )
1940-07-30
Circuit de lampe thermionique
CA387433A
(fr )
1940-03-12
Amplificateur thermionique
CA388870A
(fr )
1940-05-21
Amplificateur thermionique
CA389627A
(fr )
1940-06-25
Amplificateur thermionique
CA374758A
(fr )
1938-06-28
Lampe thermionique
CA391721A
(fr )
1940-10-01
Lampe de television
CA394306A
(fr )
1941-01-28
Lampe a electrons
CA398479A
(fr )
1941-08-05
Lampe a electrons
CA401016A
(fr )
1941-11-25
Lampe a electrons
CA393480A
(fr )
1940-12-31
Lampe a rayons-x
CA392674A
(fr )
1940-11-19
Lampe a faisceau d'electrons
CA386042A
(fr )
1940-01-02
Lampe a rayons cathodiques
CA386699A
(fr )
1940-02-06
Lampe a rayons cathodiques
CA387892A
(fr )
1940-04-09
Lampe a rayons cathodiques
CA388392A
(fr )
1940-04-30
Lampe a rayons cathodiques
CA389606A
(fr )
1940-06-25
Lampe a rayons cathodiqu
CA390813A
(fr )
1940-08-20
Lampe a rayons cathodiques
CA391722A
(fr )
1940-10-01
Lampe a rayons cathodiques
CA392032A
(fr )
1940-10-22
Lampe a rayons cathodiques
CA391871A
(fr )
1940-10-08
Dispositif a electrons
CA389460A
(fr )
1940-06-18
Lampe a decharge d'electrons
CA391547A
(fr )
1940-09-24
Lampe a decharge d'electrons