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Chapter 227 Xingyuan mobile payment
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... nvented in 1994 by Mr. Masahiro Shima himself.
Moreover, Mr. Yuan Changhong voluntarily gave up the patent application for the invention of the two-dimensional code.
According to him, he did this for three reasons: the first patent is time-limited, and the protection period of the invention patent is only 20 years. It can be used for free when it expires, without authorization and payment. Mr. Yuan Changhong thinks it is very troublesome, and he does not want to keep staring at his ...
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