Marke

•  Ascom AG (21)
•  Audioline (1)
•  Autophon AG (11)
•  Bang & Olufsen (1)
•  Ericsson (7)
•  Gfeller AG (13)
•  Hasler AG (3)
•  Landis & Gyr AG (1)
•  Northern Electric (1)
•  Panasonic (2)
•  Picart & Lebas (1)
•  Siemens (6)
•  Siemens Albiswerk AG, Zürich (3)
•  Simens Halske (9)
•  Swisscom (10)
•  Telcer (7)
•  Telecom (6)
•  Telgo AG (1)
•  Thomson-Houston (2)
•  Western Electric (3)
•  Zellweger AG (8)