Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04H
BROADCAST COMMUNICATION
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20/00
Arrangements for broadcast or for distribution combined with broadcast
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H04H20/44
Arrangements characterised by circuits or components specially adapted for broadcast
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H04H20/46
specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
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H04H20/47
specially adapted for stereophonic broadcast systems
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H04H20/48
for FM stereophonic broadcast systems
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