S. Siedle & Söhne
Telefon- und Telegrafenwerke OHG
Bregstrasse 1
78120 Furtwangen
(DE)
Leinweber & Zimmermann
Patentanwalts-PartG mbB
Viktualienmarkt 8
80331 München
(DE)
S. SIEDLE & Söhne Telefon- und
Telegraphenwerke Stiftung & Co.
Bregstrasse 1
Furtwangen
(DE)
Англ.Electrical engineering apparatus (included in this class); door opening devices with intercoms, transformers, power supply apparatus (with the exception of current generators), particularly current rectifiers and chargers (for electric batteries), telecommunication apparatus, namely telephone apparatus, intercoms and intercommunication devices as well as operating controls, selection apparatus and signaling apparatus, private telephone sets.