DK46340C
(en )
1932-10-17
Circuit Arrangement for Operating a Calling Subscriber's Call Counter in Automatic Telephone Systems.
DK51827C
(en )
1936-06-29
Device for Registering a Calling Telephone Subscriber Number.
DK36451C
(en )
1926-08-30
Device for Telephone Call Counting Devices.
CH207619A
(en )
1939-11-15
Circuit arrangement for determining calling subscriber stations, in telecommunication systems, in particular telephone systems with dialer operation.
DK34240C
(en )
1925-03-09
Circuit device for a telephone system in which the calls are distributed automatically.
CH218528A
(en )
1941-12-15
Telephone subscriber station.
CH238418A
(en )
1945-07-15
Switching device, in particular for telecommunications installation.
DK46085C
(en )
1932-08-22
Circuit device for automatic telephone subscriber stations.
DK40360C
(en )
1929-06-24
Device for Controlling Automatic Selectors in Telephone Systems.
GR2306B
(en )
1929-05-30
SWITCH SETTINGS FOR AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE SYSTEMS.
DK44532C
(en )
1931-08-24
Device for Automatically Entering the Number or Other Characters from a Calling Party to the Called Party in Automatic Telephone Systems.
AT112310B
(en )
1929-02-25
Circuit arrangement for call seekers in automatic telephone exchanges.
DK57899C
(en )
1940-08-19
Automatic Calling Machine for Automatic and Semi-Automatic Telephone Systems.
GR2353B
(en )
1929-07-04
IMPROVEMENTS IN SWITCH ARRANGEMENTS BY AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE SYSTEMS.
AT98365B
(en )
1924-11-10
Call counters for telephone subscriber stations.
ES83813A1
(en )
1923-04-16
Improvements in the automatic call selectors of the telephone installations.
AT105676B
(en )
1927-02-25
Circuit arrangement for manual telephone exchanges with automatic calling from subscriber stations which are connected to the same telephone line.
DK45984C
(en )
1932-07-25
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK46218C
(en )
1932-09-19
Circuit arrangement for fully or semi-automatic Telephone Systems.
GR1382B
(en )
1926-12-31
(TELEPHONE) CALL MACHINES.
DK45907C
(en )
1932-07-11
Circuit arrangement for fully and semi-automatic Telephone Systems.
CH214510A
(en )
1941-04-30
Switching device in telecommunications systems, in particular in telephone systems.
GR2346B
(en )
1929-06-24
SWITCH SETTINGS, AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE CHANGE SYSTEMS.
DK46048C
(en )
1932-08-15
Circuit arrangement for fully or semi-automatic Telephone exchanges.
DK45439C
(en )
1932-03-21
Circuit arrangement for fully or semi-automatic Telephone systems.