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US07881962B2 Early-payment discount for E-billing system 有权
电子计费系统的早期优惠

Early-payment discount for E-billing system
Abstract:
An Early Payment Discount (EPD) mechanism that enables customers to automatically receive an early payment discount for paying their invoice electronically, e.g., via electronic funds transfer (EFT), through an e-Billing system within a designated number of days from on-line invoice post date.
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