CA455854A
(fr )
1949-04-12
Lampe a decharge d'electrons
CA457479A
(fr )
1949-06-21
Structure de lampe a electrons
AU148518B2
(en )
1949-06-02
Electron tube construction
CA455542A
(fr )
1949-03-29
Relais de lampe a electrons
CA458837A
(fr )
1949-08-09
Structure de lampe thermionique
CA458838A
(fr )
1949-08-09
Structure de lampe thermionique
AU2742449A
(en )
1949-06-02
Electron tube construction
CA458444A
(fr )
1949-07-26
Lampe thermionique
CA456010A
(fr )
1949-04-19
Lampe a rayons cathodiques
CA457349A
(fr )
1949-06-14
Lampe a rayons cathodiques
CA460928A
(fr )
1949-11-08
Lampe a rayons cathodiques
CA455259A
(fr )
1949-03-22
Lampe a decharge d'electrons
CA456610A
(fr )
1949-05-10
Lampe a decharge d'electrons
CA459713A
(fr )
1949-09-13
Lampe a decharge d'electrons
CA460620A
(fr )
1949-10-25
Lampe a decharge d'electrons
CA456392A
(fr )
1949-05-03
Lampe a vide
CA461767A
(fr )
1949-12-13
Microspectroscope a electrons
CA457371A
(fr )
1949-06-14
Appareil de lampe a electrons
CA460728A
(fr )
1949-11-01
Construction de tube
CA454743A
(fr )
1949-02-22
Lampe a vide
CA463441A
(fr )
1950-02-28
Lampe a electrons
CA466331A
(fr )
1950-07-04
Lampe a electrons
CA455207A
(fr )
1949-03-15
Lampe a cathode chaude
CA459317A
(fr )
1949-08-30
Lampe a cathode chaude
CA453990A
(fr )
1949-01-11
Structure de cathode