NL1171C
(en )
1916-03-15
Device for line dialers and automatic telephone installations
NL1516C
(en )
1916-09-15
Improvement to a dialer control device for automatic telephone installations
NL1188C
(en )
1916-03-15
Circuit for automatic telephone installations with surge transmitters
DK14160C
(en )
1911-01-30
Connection device for automatic Telephone Stations.
NL5179C
(en )
1920-08-02
Automatic telephone system
FR448109A
(en )
1913-01-23
Automatic telephone device
ES51258A1
(en )
1912-01-16
Communication device for automatic telephone installations.
FR14297E
(en )
1911-10-24
Automatic counting device for telephone calls
FR15212E
(en )
1912-05-22
Switch for telephone systems
DK13975C
(en )
1910-12-05
Wiring Connection and Device for Setting Up Dialers in Automatic Telephone Centers.
FR448216A
(en )
1913-01-25
Automatic telephone switch
FR435440A
(en )
1912-02-29
Automatic collector for telephone devices
CH58095A
(en )
1913-02-17
Automatic extinguishing device
CH57406A
(en )
1913-01-02
Call facility for telephone systems with several party lines
CH58183A
(en )
1913-02-17
Automatic shut-off device on bathtubs
FR420296A
(en )
1911-01-26
Provision for automatic telephone systems
FR451688A
(en )
1913-04-24
Automatic telephone system
NL789C
(en )
1915-09-03
Improvement to line finders for automatic telephone installations
CH58101A
(en )
1913-03-17
Automatic telephony installation
FR14333E
(en )
1911-11-17
Devices and circuits for telephone intercommunications
CH57407A
(en )
1913-02-17
Telephone switchboard
FR426179A
(en )
1911-06-29
Coupling device for telephone exchanges
DK14613C
(en )
1911-05-29
Connecting device for semi-automatic Telephone exchanges.
CH54046A
(en )
1912-05-01
Installation in automatic telephone systems
CH56248A
(en )
1912-10-16
Installation in automatic telephone systems