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n4google.
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Subject Item
isa:1652176
rdf:type
prov:Entity
prov:value
source of high-frequency current at two difierent frequencies, means controlled by said current of two frequencies for moving said cathode ray at said transmitting station, means including said detecting device at said receiving station for moving the cathode ray thereat, means controlled by the cathode ray at said transmitting station for modulating said first high-frequency current in accordanc
prov:wasQuotedFrom
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isa:1652176