DK43996C
(en )
1931-04-13
Circuit arrangement for automatic telephone systems.
DK45941C
(en )
1932-07-18
Circuit arrangement for automatic telephone systems.
DK42697C
(en )
1930-08-04
Circuit arrangement for a telephone system.
DK42942C
(en )
1930-09-08
Circuit arrangement for a telephone system.
DK42695C
(en )
1930-08-04
Selector device for 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.
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.
DK45359C
(en )
1932-03-07
Circuit Device for Automatic Telephone Systems.
DK46657C
(en )
1932-12-19
Circuit device 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.
DK45217C
(en )
1932-02-08
Circuit arrangement for an automatic telephone system.
DK45439C
(en )
1932-03-21
Circuit arrangement for fully or semi-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.
DK45876C
(en )
1932-07-04
Circuit arrangement for automatic telephone systems.
ES93024A1
(en )
1925-06-16
Improvements in automatic telephone systems.
DK35360C
(en )
1925-12-07
Automatic Telephone System.
DK43223C
(en )
1930-10-20
Circuit Arrangement for Use in Telephone Systems.
ES94412A1
(en )
1925-11-01
Improvements in automatic telephone systems.
GR1383B
(en )
1926-12-31
AUTOMATIC TELEPHONE SYSTEMS.