DK45641C
(en )
1932-05-09
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK45164C
(en )
1932-02-01
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK47425C
(en )
1933-06-12
Circuit arrangement for fully or semi-automatic Telephone Systems.
CH149577A
(en )
1931-09-15
Subscriber set for fully automatic telephone systems.
DK45439C
(en )
1932-03-21
Circuit arrangement for fully or semi-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.
DK45907C
(en )
1932-07-11
Circuit arrangement for fully and 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.
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.
CH153049A
(en )
1932-02-29
Circuit arrangement in telephone systems.
DK45841C
(en )
1932-06-27
Circuit arrangement of semi-automatic Telephone Systems.
DK41152C
(en )
1929-11-25
Selector for fully or semi-automatic Telephone Systems.
DK43996C
(en )
1931-04-13
Circuit arrangement for automatic telephone systems.
DK45470C
(en )
1932-03-29
Circuit arrangement for fully or semi-automatic Telephone Systems.
AT126814B
(en )
1932-02-10
Circuit arrangement for automatic and semi-automatic telephone systems.
DK45090C
(en )
1932-01-11
Circuit arrangement for fully or semi-automatic Telephone Systems.
DK45941C
(en )
1932-07-18
Circuit arrangement for automatic telephone systems.
AT121482B
(en )
1931-02-25
Circuit arrangement for telephone systems.
DK45973C
(en )
1932-07-25
Register for fully or semi-automatic Telephone Systems.
ES117421A1
(en )
1930-04-16
Non-numerical commutation arrangements for automatic or semi-automatic telephone systems.
DK44998C
(en )
1931-12-14
Circuit arrangement for a fully or semi-automatic Telephone System.