CH53497A
(en )
1912-03-01
Device for setting voters in automatic telephone exchanges
CH53342A
(en )
1912-02-16
Device for setting and switching dialers in automatic telephone systems
CH56987A
(en )
1912-12-02
Device for closing drains
DK13975C
(en )
1910-12-05
Wiring Connection and Device for Setting Up Dialers in Automatic Telephone Centers.
FR476461A
(en )
1915-08-05
Automatic telephone switch
GB191115129A
(en )
1912-02-01
Improvements in Registering Circuits for Automatic Telephone Exchanges
FR448216A
(en )
1913-01-25
Automatic telephone switch
DK17069C
(en )
1913-03-17
Switching device for Telephone exchanges.
CH65764A
(en )
1914-07-16
Device for phonographically defining conversations
CH64136A
(en )
1914-03-16
Device for changing the matrices in setting machines with matrices guided by wires
CH57064A
(en )
1912-12-02
Device for changing the matrices in setting machines with matrices guided by wires
DK19634C
(en )
1914-12-21
Drive device for Switchboards in Telephone exchanges.
DK14613C
(en )
1911-05-29
Connecting device for semi-automatic Telephone exchanges.
CH51545A
(en )
1911-09-01
Device for counting coins
CH53325A
(en )
1912-02-01
Device for starting synchromotor
FR488803A
(en )
1918-11-19
Automatic telephone switch
DK13958C
(en )
1910-12-05
Device for automatic connection between the Participants in a Telephone Exchange.
DK21265C
(en )
1916-06-13
Wiring device at automatic telephone exchanges.
CH64026A
(en )
1914-03-02
Device for showing cinematograms
CH74450A
(en )
1917-02-16
Device for digging out thumbtacks
AT66318B
(en )
1914-08-25
Circuit arrangement for automatic switches in telephone exchanges.
DK20369C
(en )
1915-07-19
Signal device for Telephone exchanges with semi-automatic setting.
FR454163A
(en )
1913-06-27
Further training in talking machines
FR484357A
(en )
1917-10-02
Automatic switching device for thermotelephones
DK14118C
(en )
1911-01-23
Device for holding a Microphone in the Telephone Useful Position.