Assignee

KELLER SR JOHN A

US·1 granted patent·67 citations·filing 1996–1996

Technology mixB42D1 G06K1 Y10S1

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0178US6196594B1Method and apparatus for credit card maintenanceKELLER SR JOHN A·Filed 1996·Granted Mar 6, 2001·67 cites·28 claims

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