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It's true AMEX has patents in this area; however, they license "clear payment card technology" to others. https://www.creditcards.com/credit-card-news/amex-lic
by astura 8y ago
It's true AMEX has patents in this area; however, they license "clear payment card technology" to others.
https://www.creditcards.com/credit-card-news/amex-licenses-clear-credit-card-technology-1264.php https://www.creditcards.com/credit-card-news/amex-licenses-c...