DK49570C
(en )
1934-11-26
Device for Use in Dialing in Automatic Telephone Devices.
DK50145C
(en )
1935-04-15
Device for automatic telephone systems.
CH240076A
(en )
1945-11-30
Telephone switchboard.
FR756825A
(en )
1933-12-15
Portable tutor for telephone receiver
DK50509C
(en )
1935-08-05
Device for individual subscriber circuits at telephone exchanges.
DK44804C
(en )
1931-11-09
Device for automatic telephone exchanges.
DK47953C
(en )
1933-10-30
Device for desk telephones.
DK49463C
(en )
1934-10-29
Device for Telephone Systems for Receiving AC Pulses.
DK48390C
(en )
1934-02-12
Device at Ruder in Kølerum.
CA321470A
(en )
1932-04-12
Telephone calling device
CA329415A
(en )
1933-01-17
Telephone device
DK52539C
(en )
1937-01-11
Impulse transmitter, preferably for Use in Automatic Telephone Systems.
FR756262A
(en )
1933-12-07
Device for counting telephone calls
CH196293A
(en )
1938-02-28
Device for diverting a telephone call.
DK48473C
(en )
1934-03-05
Device for automatic telephone systems.
DK49890C
(en )
1935-02-18
Device at Kværne.
DK50510C
(en )
1935-08-05
Coupling device for automatic Telephone systems.
DK50376C
(en )
1935-07-01
Coupling device for automatic Telephone systems.
DK49578C
(en )
1934-11-26
Coupling device for automatic Telephone systems.
DK56054C
(en )
1939-04-17
Automatic Phone Dialer.
DK53928C
(en )
1937-11-29
Telephone system.
ES339Y
(en )
1931-09-16
Automatic telephone incidental dialer and switch.
DK51039C
(en )
1935-12-16
Device at Water closets.
DK55732C
(en )
1939-01-23
Fully or semi-automatic Telephone System.
DK55578C
(en )
1938-12-19
Telephone subscriber device with ATM.