CA396401A
(fr )
1941-05-06
Systeme de communication en deux sens a simple canal
CA394106A
(fr )
1941-01-21
Systeme de communications
CA395125A
(fr )
1941-03-11
Systeme de communications
CA395654A
(fr )
1941-04-01
Systeme de communication
CA395655A
(fr )
1941-04-01
Systeme de communication
CA396418A
(fr )
1941-05-06
Systeme de communication
CA401307A
(fr )
1941-12-09
Systeme de communications
CA396074A
(fr )
1941-04-22
Systeme repetiteur
CA395750A
(fr )
1941-04-08
Systeme de ligne de transmission
CA395338A
(fr )
1941-03-18
Repetiteur telegraphique a ligne unique
CA401694A
(fr )
1941-12-23
Systeme telegraphique
CA396701A
(fr )
1941-05-20
Systeme telegraphique
CA398897A
(fr )
1941-08-26
Systeme telegraphique
CA400308A
(fr )
1941-10-28
Systeme telegraphique
CA395213A
(fr )
1941-03-11
Systeme de communication
CA395214A
(fr )
1941-03-11
Systeme de communication
CA394866A
(fr )
1941-02-25
Systeme telephonique
CA394870A
(fr )
1941-02-25
Systeme telephonique
CA397941A
(fr )
1941-07-15
Systeme telephonique
CA398184A
(fr )
1941-07-22
Systeme telephonique
CA398253A
(fr )
1941-07-29
Systeme telephonique
CA398255A
(fr )
1941-07-29
Systeme telephonique
CA398256A
(fr )
1941-07-29
Systeme telephonique
CA398569A
(fr )
1941-08-12
Systeme telephonique
CA398988A
(fr )
1941-09-02
Systeme telephonique