CH53141A
(en )
1912-02-01
Automatic switch for closing and opening electrical circuits one after the other
CH66214A
(en )
1914-08-17
Automatic machine for opening and closing electrical circuits
AT82885B
(en )
1921-02-25
Device for closing and interrupting the electrical current.
CH53188A
(en )
1912-02-01
Device on two-part sliding doors for opening and closing the same
CH56987A
(en )
1912-12-02
Device for closing drains
AU495806A
(en )
1906-04-24
Improvements in apparatus for opening and closing electric circuits at predetermined times
CH36598A
(en )
1907-02-15
Device for opening and closing sliding shutters from the interior
CH52237A
(en )
1911-11-01
Device for opening and closing shutters
CH48570A
(en )
1910-11-01
Device for opening and closing shutters from inside the room
CH56326A
(en )
1912-11-01
Device for opening cans and the like
DK20395C
(en )
1915-08-02
Electrical safety device for controlling the opening and closing of railway switches.
CH56306A
(en )
1912-10-16
Device for fixing doors, especially those of stables in the open position
CH61639A
(en )
1913-10-01
Device for opening and closing roof fans
CH69598A
(en )
1915-07-01
Device for opening and closing skylight windows
CH37438A
(en )
1907-06-15
Automatically acting device for closing pressure lines when they break
FR414637A
(en )
1910-09-07
Advanced thread breaker
CH37524A
(en )
1907-07-15
Apparatus unit for electrical operations with switch, fuses and protective box
CH42427A
(en )
1909-02-01
Device for automatic switching on and off of the electrical lighting of railway trains when driving in tunnels
CH39807A
(en )
1908-04-16
Installation in railway systems with electrical signaling devices for actuating the latter
CH70309A
(en )
1915-09-16
Screw nail for closing boxes and the like
CH56932A
(en )
1912-12-02
Switching device that can be operated with low current for switching electrical lighting on and off
CH55884A
(en )
1912-09-16
Automatic door lock that can be released from inside and outside
GB190818359A
(en )
1909-04-01
Electric Circuit Tester
CH37250A
(en )
1907-05-15
High-voltage and low-voltage contact device
CH63514A
(en )
1914-04-01
Device for the automatic closing of doors