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日期:2026-04-25
重要更新:本站美國專利全文下載已全面支持所有的美國專利公開文件、授權文件,全面支持PDF格式與TIF格式! 格式:專利申請公開號或審定授權號,申請公開號格式為4位年份+序列號組成,例如:20060100198,20050158320,共11位數字。...
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日期:2026-04-20
The official website of the European Patent Office (EPO). Find information on applying and searching for patents, legal issues on patents, patent grants, rules and regulations about ......
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日期:2026-04-24
Complete Patent Searching Database and Patent Data Analytics Services....
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日期:2026-04-21
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日期:2026-04-19
www.pat2pdf.org - A FREE patent search tool. Download U.S. patents (in PDF)
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日期:2026-04-23
Patent Fetcher Pay-As-You-Go is a place for low-cost patent downloads. Our patent images come in the form of a single PDF file for each patent or published patent application, delivered via our high speed imaging servers. Patent Fetcher is a service of St...
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日期:2026-04-26
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日期:2026-04-22
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