DK39275C
(en )
1928-09-24
Automatic or semi-automatic Parts line telephone system.
DK43784C
(en )
1931-03-02
Automatic or semi-automatic Telephone System.
DK46338C
(en )
1932-10-17
Automatic or semi-automatic Telephone System.
DK44926C
(en )
1931-11-30
Automatic or semi-automatic Telephone System.
DK45358C
(en )
1932-03-07
Automatic or semi-automatic Telephone System.
DK43359C
(en )
1930-11-17
Semi-automatic Telephone System.
DK34565C
(en )
1925-06-02
Automatic or semi-automatic Telephone System.
DK37629C
(en )
1927-06-27
Automatic or semi-automatic Telephone System.
ES92192A1
(en )
1925-04-16
Improvements in automatic or semi-automatic telephone systems.
ES93021A1
(en )
1925-06-16
Improvements in automatic or semi-automatic telephone systems.
ES93024A1
(en )
1925-06-16
Improvements in automatic telephone systems.
GR1446B
(en )
1927-03-09
AUTOMATIC TELEPHONE SYSTEM.
ES94412A1
(en )
1925-11-01
Improvements in automatic telephone systems.
ES93788A1
(en )
1925-07-16
Improvements in automatic telephone systems in general.
DK35360C
(en )
1925-12-07
Automatic Telephone System.
DK37494C
(en )
1927-05-16
Counter for Use in an Automatic or Semi-Automatic Telephone System.
ES99395A1
(en )
1926-11-16
Improvements in automatic or semi-automatic telephone systems.
DK34322C
(en )
1925-03-30
Automatic Telephone System.
GR1383B
(en )
1926-12-31
AUTOMATIC TELEPHONE SYSTEMS.
GR1448B
(en )
1927-10-20
AUTOMATIC TELEPHONE SYSTEM.
GR1611B
(en )
1927-09-26
AUTOMATIC TELEPHONE SYSTEM.
GR1700B
(en )
1928-01-02
AUTOMATIC TELEPHONE SYSTEM.
DK46755C
(en )
1933-01-09
Fully or semi-automatic Telephone System.
DK36636C
(en )
1926-10-04
Semi-automatic or automatic Telephone system.
DK42593C
(en )
1930-07-14
Telephone system.