CA469683A
(fr )
1950-11-28
Circuits de lampes thermioniques
CA464208A
(fr )
1950-04-04
Circuit de lampe a electron
CA468702A
(fr )
1950-10-10
Circuits d'amplificateurs thermioniques
CA463441A
(fr )
1950-02-28
Lampe a electrons
CA466331A
(fr )
1950-07-04
Lampe a electrons
CA468169A
(fr )
1950-09-19
Circuits de lampes de reactance
CA478388A
(fr )
1951-11-06
Circuits de lampes a vide
CA464475A
(fr )
1950-04-18
Lampe
CA466215A
(fr )
1950-06-27
Lampe electronique
CA466342A
(fr )
1950-07-04
Circuit de lampe multiplicatrice d'electrons
CA474222A
(fr )
1951-06-05
Circuits de tubes thermioniques
CA478943A
(fr )
1951-11-27
Circuits de lampes thermioniques
CA466380A
(fr )
1950-07-04
Lampe a rayons electroniques
CA462684A
(fr )
1950-01-24
Raccord de tuyau
CA467004A
(fr )
1950-08-01
Circuits accouples
CA463587A
(fr )
1950-03-07
Lampe a rayons-x
CA474255A
(fr )
1951-06-05
Lampes thermioniques
CA466396A
(fr )
1950-07-04
Lampe a decharge d'electrons
CA467188A
(fr )
1950-08-08
Circuits manipulateurs de pulsations
CA469321A
(fr )
1950-11-14
Circuits de reglage de proportion de charge
CA469410A
(fr )
1950-11-14
Dispositifs a decharge d'electrons
CA469411A
(fr )
1950-11-14
Dispositifs a decharge d'electrons
CA478721A
(fr )
1951-11-20
Dispositifs thermioniques
CA469677A
(fr )
1950-11-28
Circuits de commande de frequence
CA476659A
(fr )
1951-09-04
Circuits de lampes a decharge d'electrons