DK40360C
(en )
1929-06-24
Device for Controlling Automatic Selectors in Telephone Systems.
DK42695C
(en )
1930-08-04
Selector device for automatic Telephone systems.
DK45975C
(en )
1932-07-25
Device for Controlling Circuits in Telephone Systems.
ES97051A1
(en )
1926-04-16
Improvements in automatic telephone systems.
ES94412A1
(en )
1925-11-01
Improvements in automatic telephone systems.
ES93024A1
(en )
1925-06-16
Improvements in automatic telephone systems.
DK41793C
(en )
1930-03-10
Selector for automatic Telephone Systems.
DK43996C
(en )
1931-04-13
Circuit arrangement for 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.
DK45217C
(en )
1932-02-08
Circuit arrangement for an automatic telephone system.
ES99048A1
(en )
1926-11-01
Improvements in 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.
ES93788A1
(en )
1925-07-16
Improvements in automatic telephone systems in general.
DK43546C
(en )
1930-12-29
Selector for Use in Automatic Telephone Systems.
GR1383B
(en )
1926-12-31
AUTOMATIC TELEPHONE SYSTEMS.
DK44558C
(en )
1931-09-07
Circuit device for automatic telephone systems.
DK41644C
(en )
1930-02-17
Device for automatic telephone systems.
AT126852B
(en )
1932-02-25
Automatic pump switching device for pump systems.
DK45941C
(en )
1932-07-18
Circuit arrangement for automatic telephone systems.
DK45907C
(en )
1932-07-11
Circuit arrangement for fully and semi-automatic Telephone Systems.
ES99395A1
(en )
1926-11-16
Improvements in automatic or semi-automatic telephone systems.
ES113359A1
(en )
1929-10-16
Improvements in the switching arrangements for automatic or semi-automatic telephone station systems.
ES112398A1
(en )
1929-10-01
Improvements in automatic or semiautomatic telephone systems.