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Contact spring assembly for relays and the like
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Electric control magnets
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Polarized electromagnetic device
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Current-feed arrangement in automatic telephone and telegraph systems
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Automatic service control system with fault recording
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Polarized electromagnetic control devices
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Crossbar switches
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Electric switching devices
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Electrical contact spring assembly
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Polarized relay
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Telephone apparatus
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Contact support for crossbar switches
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Automatic telephone system
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Contact spring assembly or the like and method of producing the same
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Selecting device for telephone and signal systems
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Set of contact springs for electrical switching apparatus
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Arrangement relating to telephone, telegraph, and signal systems
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