CA375925A
(fr )
1938-08-23
Systeme de distribution du reseau
CA382720A
(fr )
1939-07-18
Systeme de distribution a reseau
CA382721A
(fr )
1939-07-18
Systeme de distribution a reseau
CA374063A
(fr )
1938-05-24
Systeme de distribution d'electricite
CA373055A
(fr )
1938-04-12
Systeme de distribution electrique
CA371639A
(fr )
1938-02-01
Systeme de communications
CA372796A
(fr )
1938-03-29
Systeme de communications
CA376997A
(fr )
1938-10-11
Systeme selecteur des signaux
CA373655A
(fr )
1938-05-10
Systeme de telemoteur
CA374719A
(fr )
1938-06-28
Systeme collecteur de signaux par ondes
AU107345B2
(en )
1939-05-03
Power distribution systems
CA371020A
(fr )
1938-01-04
Systeme telegraphique
CA371019A
(fr )
1938-01-04
Systeme telegraphique
CA371497A
(fr )
1938-01-25
Systeme telegraphique
CA376525A
(fr )
1938-09-20
Reseau electrique
CA378128A
(fr )
1938-12-06
Systeme de teledactylotype
CA372070A
(fr )
1938-02-22
Systeme telephonique
CA374837A
(fr )
1938-07-05
Systeme telephonique
CA371257A
(fr )
1938-01-18
Systeme telephonique
CA371481A
(fr )
1938-01-25
Systeme telephonique
CA371520A
(fr )
1938-01-25
Systeme telephonique
CA371524A
(fr )
1938-01-25
Reseau telephonique
CA371833A
(fr )
1938-02-08
Reseau telephonique
CA372056A
(fr )
1938-02-22
Systeme telephonique
CA378505A
(fr )
1938-12-27
Systeme telephonique