Patent classifications
H
ELECTRICITY
Load children
H04
ELECTRIC COMMUNICATION TECHNIQUE
Load children
H04M
TELEPHONIC COMMUNICATION
Load children
2215/00
Metering arrangements; Time controlling arrangements; Time indicating arrangements
Load children Filter patents View analytics View as hierarchy
H04M2215/54
Resellers-retail or service providers billing, e.g. agreements with telephone service operator, activation, charging/recharging of accounts
Filter patents View analytics View as hierarchy