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Preventing unauthorised calls from a telephone set
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Industry
CPC
H04M1/667
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
H
ELECTRICITY
H04
Electric communication
H04M
TELEPHONIC COMMUNICATION
H04M1/00
Substation equipment
Current Industry
H04M1/667
Preventing unauthorised calls from a telephone set
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