CH51010A
(en )
1911-07-17
Entry isolator for telegraph and telephone lines
FR423356A
(en )
1911-04-14
Telephone instruments
DK14812C
(en )
1911-07-17
Insulator for Telegraph, Telephone and similar Wiring.
FR481601A
(en )
1916-12-28
Telegraph and telephone isolator
DK14073C
(en )
1911-01-02
Insert insulator for Telegraph and Telephone cables.
FR412186A
(en )
1910-07-06
Surge arrester for telegraph and telephone lines
FR450124A
(en )
1913-03-15
Mute for telegraph or telephone line
FR412602A
(en )
1910-07-18
Input isolator for telegraph and telephone lines
CH69568A
(en )
1915-07-01
Transmitter for telephone lines
FR12980E
(en )
1910-12-31
Microphone and telephone receiver
FR20051E
(en )
1916-03-22
Receivers and transmitters for telephone sets
AT54954B
(en )
1912-08-26
Circuit arrangement for dialers of self-connecting telephone systems.
FR426183A
(en )
1911-06-29
Tachytelegraph and teletype machine
CH52337A
(en )
1911-11-16
Call counting device for telephone systems
CH55448A
(en )
1912-08-16
Call counting device for telephone systems
CH48774A
(en )
1910-12-01
Telephone installation
FR407765A
(en )
1910-03-10
Telephone recorder
ES48531A1
(en )
1910-09-16
Improvements in telephone devices.
CA134170A
(en )
1911-07-04
Telegraph and telephone
CH54232A
(en )
1912-05-01
Automatic telephone dialer
CH40255A
(en )
1908-06-16
Insulator for electric lines
ES49378A1
(en )
1911-01-16
An insulated isolator and bracket.
FR434603A
(en )
1912-02-08
Multiple telephony and telegraphy
CA134430A
(en )
1911-07-18
Insulator for telegraph and telephone wires
FR423110A
(en )
1911-04-08
Telephone communications counter