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.
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.
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.
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.
GR1383B
(en )
1926-12-31
AUTOMATIC TELEPHONE SYSTEMS.
DK43359C
(en )
1930-11-17
Semi-automatic Telephone System.
DK45973C
(en )
1932-07-25
Register for fully or semi-automatic Telephone Systems.
DK44558C
(en )
1931-09-07
Circuit device for automatic telephone systems.
GR1446B
(en )
1927-03-09
AUTOMATIC TELEPHONE SYSTEM.
GR1378B
(en )
1926-12-31
IMPROVEMENTS IN 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.
DK42697C
(en )
1930-08-04
Circuit arrangement for a telephone system.
DK42942C
(en )
1930-09-08
Circuit arrangement for a telephone system.
DK45359C
(en )
1932-03-07
Circuit Device for Automatic Telephone Systems.