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SU16760A1
(en)
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A device for automatically switching on and off the electric current at a certain time
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(en)
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Improvements in current rectifier devices
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GB294219A
(en)
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Releasing device for electric switches
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(en)
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Device for protecting electric lamps from unscrewing
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CH127386A
(en)
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Device for reducing the tripping time of automatic electrical switches.
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ES101352A1
(en)
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Automatic electric switch.
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(en)
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COMPENSATORY DEVICE POWERFUL BY ELECTRIC VOLTAGE DEVICE.
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FR630380A
(en)
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Current reducer operating on all currents
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Electric switching device
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FR597393A
(en)
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Improvements in current rectifier devices
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ES108428A3
(en)
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Switch device for electric current.
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(en)
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Electric current rectifier
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CA276634A
(en)
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Space current device
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CA272673A
(en)
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Space current device
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(en)
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Reversing current switch
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ES104155A1
(en)
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Electric discharge device.
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FR653617A
(en)
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Electric switch
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ES89039A1
(en)
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Improvements in the switches for electric current.
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ES104197A1
(en)
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A unidirectional electric current conducting device.
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FR636939A
(en)
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Automatic electric switch
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AT108656B
(en)
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Automatic electrical switch.
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ES104001A2
(en)
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Improvements in current rectifying devices.
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AT98894B
(en)
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Heavy current switch or connection device.
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FR598705A
(en)
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Current switch
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ES102571A1
(en)
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Improvements in current rectifier devices.
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