CH65992A
(en )
1914-08-01
Switching device for electrically operated pumps etc.
CH64550A
(en )
1914-04-01
Automatic switching device for electrically operated pumps
AT67967B
(en )
1915-02-25
Membrane contact device.
DK17849C
(en )
1913-09-29
Electrical Switch.
DK16556C
(en )
1912-10-28
Connection by electrical block devices.
DK18734C
(en )
1914-04-27
Automatic Switching Device for Electrically Powered Pumps.
DK17854C
(en )
1913-09-29
Device by Telephones.
AT52260B
(en )
1912-02-26
Circuit for electrically operated elevators.
DK16081C
(en )
1912-06-17
Electrical Pressure Switch.
DK17021C
(en )
1913-02-24
Device by Baaddavider.
AT71121B
(en )
1916-02-10
Circuit arrangement for telephone systems operated with voters.
AT71510B
(en )
1916-04-10
Ten switching device for calculating machines.
DK18175C
(en )
1913-12-01
Device by Dilution Pumps.
AT82874B
(en )
1921-02-25
Protection device for electrical lines.
DK19557C
(en )
1914-12-07
Electrical Outlet.
AT82822B
(en )
1921-02-25
Telephone switching system.
AT68462B
(en )
1915-04-26
Coupling for electrical lines.
ES55203A3
(en )
1913-06-01
An electric lighter device.
DK21015C
(en )
1916-02-14
Device by electrical switches.
AT73118B
(en )
1917-02-26
Circuit arrangement for telephone systems with central battery operation.
DK19160C
(en )
1914-08-24
Device by Telephones.
AT75551B
(en )
1919-02-25
Telephone circuit.
DK18232C
(en )
1913-12-15
Plate shears.
CH58766A
(en )
1913-04-01
Drive device for switches, control devices etc.
ES52044A1
(en )
1912-04-01
An electrical switch.