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日期:2026-04-23
2015年2月4日 - Information about the U.S. patenting process, including agency organization chart, rules and regulations, FAQs, and online applications....
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日期:2026-04-18
行動版 - 2014年12月10日 - Check patent application status with Public and Private PAIR....
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2015年2月23日 - Search database for trademark registrations and applications by mark, owner, or serial/registration number with Trademark Electronic Search ......
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日期:2026-04-19
The first patent law was enacted in 1790. The patent laws underwent a general revision which was enacted July 19, 1952, and which came into effect January 1,  ......
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日期:2026-04-21
s Difference Between Design and Utility Patents . .... States Patent and Trademark Office (USPTO or. Office) examines ......
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日期:2026-04-18
Provisional Patent Application Forms ... CAUTIONS The benefits of the provisional application cannot be claimed if the 12 month deadline for filing a nonprovisional application has expired (unless the benefit of the provisional application has been restor...
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日期:2026-04-20
2012年9月13日 - Find existing patents and public patent applications. ... Search form. Enter the text you wish to search for. About Us · Careers · Contact Us....