Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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H04L25/02
Details; ; arrangements for supplying electrical power along data transmission lines
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H04L25/20
Repeater circuits; Relay circuits
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H04L25/26
Circuits with optical sensing means; , i.e. using opto-couplers for isolation
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