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Detent for low mass object
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Slow motion timing circuit for a stroboscope
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Timer circuit for magnetic actuators
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Electromagnetic shutter with detent
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Shock-absorbing detent
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Constant force electromechanical actuator
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Method and apparatus for comparing the operating characteristics of a relay to a standard relay using bridge techniques
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Method of making contact members for crossbar switch
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Crossbar switch
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Electromagnets
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Automatic telephone system
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Cross-bar switch
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Coordinate electrical switching means
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Intercommunicating system
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Intercommunicating telephone system
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CA562242A
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Automatic telephone system
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CA595440A
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Coordinate electrical switch
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