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CARD IDENTIFICATION AND VERIFICATION SYSTEM AND DEVICES
US 3,504,343 A
Filed
: 08/08/1967
Issued
: 03/31/1970
Est. Priority Date
: 08/08/1967
Status: Expired due to Term
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Current Assignee
Harry G. Ditlow
Original Assignee
Harry G. Ditlow
Inventors
Ditlow, Harry G.
Application Number
US04/659,068
Time in Patent Office
966 Days
Field of Search
US Class Current
235/441
CPC Class Codes
G06Q 20/347
Passive cards
G07F 7/10
together with a coded signa...
G07F 7/1058
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