DK45876C
(en )
1932-07-04
Circuit arrangement for automatic telephone systems.
DK45941C
(en )
1932-07-18
Circuit arrangement for automatic telephone systems.
DK45091C
(en )
1932-01-11
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK46162C
(en )
1932-09-05
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK46766C
(en )
1933-01-16
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK44558C
(en )
1931-09-07
Circuit device for automatic telephone systems.
AT126861B
(en )
1932-02-25
Installation on automatic telephone systems.
DK45359C
(en )
1932-03-07
Circuit Device for Automatic Telephone Systems.
DK46657C
(en )
1932-12-19
Circuit device for automatic Telephone Systems.
DK45090C
(en )
1932-01-11
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK45470C
(en )
1932-03-29
Circuit arrangement for fully or semi-automatic Telephone Systems.
GR1700B
(en )
1928-01-02
AUTOMATIC TELEPHONE SYSTEM.
GR1611B
(en )
1927-09-26
AUTOMATIC TELEPHONE SYSTEM.
GR1448B
(en )
1927-10-20
AUTOMATIC TELEPHONE SYSTEM.
DK41793C
(en )
1930-03-10
Selector for automatic Telephone Systems.
AT121482B
(en )
1931-02-25
Circuit arrangement for telephone systems.
DK43996C
(en )
1931-04-13
Circuit arrangement for automatic telephone systems.
DK41644C
(en )
1930-02-17
Device for automatic telephone systems.
DK45439C
(en )
1932-03-21
Circuit arrangement for fully or semi-automatic Telephone systems.
DK45217C
(en )
1932-02-08
Circuit arrangement for an automatic telephone system.
DK44758C
(en )
1931-10-26
Device by Telephone Systems.
GR1383B
(en )
1926-12-31
AUTOMATIC TELEPHONE SYSTEMS.
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.
AT126865B
(en )
1932-02-25
Circuit arrangement for automatic telephone systems.