A New or Improved Electro-magnetically Operated Device for Circuit Closing, Indicating, Transmitting Power and other purposes.
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A New or Improved Electric Device adapted for Circuit Closing, Indicating, Power Transmitting and other purposes.
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Improvements in Appliances for Intercommunication of Telephones.
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Telephonic apparatus
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Telephonic apparatus.
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An Improvement in the Adaptation of the Telephone to Electric Bell Pushes such as are Used in Ordinary Bell and Indicator Systems for Private Houses, Offices, Hotels and the like.
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Improvements in and connected with Telephones for Domestic Use.
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Improvements in and connected with Telephones for Domestic Use.
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Improvements in Micro-telephones.
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Electro-magnetic Motor for Maintaining Uniform Speed.
