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CPC
H04Q2213/094
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H
ELECTRICITY
H04
Electric communication
H04Q
SELECTING
H04Q2213/00
Indexing scheme relating to selecting arrangements in general and for multiplex systems
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H04Q2213/094
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Patent Grant
Method and apparatus for the enlargement of the reach of the transm...
Patent number
5,673,258
Issue date
Sep 30, 1997
DTM Data TeleMark GmbH
Klaus Helbig
H04 - ELECTRIC COMMUNICATION TECHNIQUE