DK45091C
(en )
1932-01-11
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK46766C
(en )
1933-01-16
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK46162C
(en )
1932-09-05
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK45974C
(en )
1932-07-25
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK45983C
(en )
1932-07-25
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK45439C
(en )
1932-03-21
Circuit arrangement for fully or semi-automatic Telephone systems.
DK45941C
(en )
1932-07-18
Circuit arrangement for 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.
DK45876C
(en )
1932-07-04
Circuit arrangement for automatic telephone systems.
DK45164C
(en )
1932-02-01
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK45641C
(en )
1932-05-09
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK47425C
(en )
1933-06-12
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK43996C
(en )
1931-04-13
Circuit arrangement for automatic telephone systems.
DK45907C
(en )
1932-07-11
Circuit arrangement for fully and semi-automatic Telephone Systems.
DK45470C
(en )
1932-03-29
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK45090C
(en )
1932-01-11
Circuit arrangement for fully or semi-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.
DK45973C
(en )
1932-07-25
Register for fully or semi-automatic Telephone Systems.
AT121482B
(en )
1931-02-25
Circuit arrangement for telephone systems.
DK44998C
(en )
1931-12-14
Circuit arrangement for a fully or semi-automatic Telephone System.
DK41793C
(en )
1930-03-10
Selector for automatic Telephone Systems.
GR1383B
(en )
1926-12-31
AUTOMATIC TELEPHONE SYSTEMS.
GR1448B
(en )
1927-10-20
AUTOMATIC TELEPHONE SYSTEM.