US1464478A
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Retarding device for time-limit relays
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US1288502A
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Selective time-limit controlling device for electric switches.
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US1126384A
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Time-controlled tripping-coil.
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US1022355A
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Protecting means for electrical distribution systems.
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US1288500A
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Selective time-limit controlling device for electric switches.
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US1041716A
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Selective time-limit-controlling device for electric switches.
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US1015613A
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Electric switch.
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US1124290A
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Current-controlling device for electric circuits.
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US980863A
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Electric switch.
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US960269A
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Shock-absorbing and cord-adjusting device for incandescent electric lamps.
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US979256A
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Time-limit device for electric switches.
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