x patent

X-patent. Patents. An early U.S. patent, granted before the numbering system set up in the Patent Act of 1836 and so named because an X was added to the numbers of existing patents to avoid duplicate numbers.

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词条贡献者

双语律师Jason，国内知名法学院民商法专业，擅长翻译有关体育博彩领域的法律文件。