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Telecommunications
Transmitter and receiver at separate stations
Earth or water medium
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Through-the-earth radio
Telecommunications – Transmitter and receiver at separate stations – Earth or water medium
Reexamination Certificate
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Through-the-earth radio
Telecommunications – Transmitter and receiver at separate stations – Earth or water medium
Reexamination Certificate
[ 0.00 ] – not rated yet
Voters
0
Comments
0
Two way communication system for water sports
Telecommunications – Transmitter and receiver at separate stations – Earth or water medium
Patent
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