Allowing original toll ticket to be used as subscriber's toll statement and providing company with permanent record of toll business, photographic machine has enabled Tri-county Telephone Co, South Haven, Mich, to improve public relations and simplify billing methods.
Accounting photographic machine facilitates toll billing
Telephony
Telephony ; 119 , n 11
1940
Aufsatz (Zeitschrift)
Englisch
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