DK21914C
(en)
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Transmitter device for wireless Telegraphy and Telephony.
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DK21830C
(en)
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Transmission Station for Wireless Telegraphy and Telephony.
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DK24276C
(en)
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Coupling device for Sending and Receiving devices for wireless Telegraphy and Telephoning.
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DK31465C
(en)
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Device for Antennas for Radio Telegraphy and Radio Telephony.
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DK21019C
(en)
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Device for Receiving Devices for Wireless Telegraphy and Telephony.
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DK24991C
(en)
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Hammer switch for radio telegraphy and similar purposes.
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DK33138C
(en)
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Device for Combined Transmission and Receipt of Electrical Oscillations for Wireless Telephony.
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DK33051C
(en)
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High Frequency Machine Transmitter for Wireless Telegraphy and Telephony.
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DK24373C
(en)
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Receiver for Wireless Telegraphs and Telephones.
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DK32296C
(en)
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Audio receiver for wireless Telegraphy and Telephony.
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ES65713A1
(en)
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A wireless telegraphy and telephone system.
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DK40519C
(en)
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Receiving device for wireless Telegraphy.
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DK20247C
(en)
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Receiving device for wireless Telegraphy.
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DK39069C
(en)
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Receiving device for wireless Telegraphy and Telephony with Frame antenna.
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DK22270C
(en)
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Transmitter for Radio Telegraph Stations.
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DK19552C
(en)
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Transmitter for Wireless Telegraphy.
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DK35183C
(en)
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Pipe transmitter connection for wireless Telegraphy and Telephony.
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FR492767A
(en)
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Telegraph transmitter
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DK35869C
(en)
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Earpiece for Telephones and similar Devices.
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DK22015C
(en)
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Telegraph.
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ES64407A1
(en)
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Improvements in wireless telegraphy and telephony.
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ES65332A1
(en)
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Telephone or telegraph switch.
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DK32036C
(en)
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Device for Antennas for Wireless Telegraphy and Telephony.
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DK31479C
(en)
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Wireless Signaling Procedure and System.
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DK30413C
(en)
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High frequency generator, especially useful for Radio Telegraphy and Radio Telephony.
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