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GB191420238A
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Improvements in Electric Current Relays.
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GB191508941A
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Improvements in Electric Coupling Transformers.
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US1229796A
|
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Telegraph and telephone system.
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GB191329447A
|
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Improvements in or relating to Apparatus suitable for use in Wireless Telegraphy & Telephony.
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GB191411708A
|
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Improvements in or relating to Arrangements for Wireless Telegraphy and Telephony.
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GB191411709A
|
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Improvements in or relating to Antennæ for Wireless Telegraphy or Telephony.
|
|
US1164407A
|
|
Telephone-relay.
|
|
GB191315179A
|
|
Improvements in Telephone Relays.
|
|
US1116130A
|
|
Electric capacitative-inductive coupling.
|
|
US1165454A
|
|
Apparatus for receiving and strengthening electric oscillations.
|
|
GB191227969A
|
|
Improvements in Telephone Receivers.
|
|
GB191204407A
|
|
Improvements in Apparatus for Reproducing Undulating Currents.
|
|
GB191218655A
|
|
Improvements in Apparatus for Reproducing Undulatory Electric Currents.
|
|
GB191204061A
|
|
Improvements in or relating to Telegraphy and Telephony by Submarine Cables, Long Distance Overhead Lines and the like.
|
|
US1178878A
|
|
Telegraphy and telephony by submarine cables, long-distance overhead lines, and the like.
|
|
US1086942A
|
|
Relay for strengthening weak electric currents.
|
|
GB191120320A
|
|
Improvements in Relays for Strengthening Weak Electric Currents.
|
|
US1101148A
|
|
Apparatus for the production and strengthening of electrical vibrations.
|
|
GB191113968A
|
|
Improvements in Electric Capacitative-inductive Couplings.
|
|
GB191024696A
|
|
Improvements in Apparatus for the Production, Strengthening and Reception of Electrical Vibrations.
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