| http://www.w3.org/ns/prov#value | - Riccitelli U.S. Pat. No. 3,934,122, Schatz U.S. Pat. No. 4,001,550 and Dethloff U.S. Pat. No. 4,105,156 are examples of electronic funds transfer systems wherein credit cards containing memory devices store account balance and other information to be accessed during funds transfer transactions.
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