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![EPO - Classification - European Patent Office]()
www.epo.orgTo make searching easier, every patent is classified. A classification scheme is a system of codes that groups inventions according to technical area. Classification schemes Patent offices worldwide use the International Patent Classification (IPC). There瀏覽：804 -
![Cooperative Patent Classification - CPC Training]()
www.cooperativepatentclassificCPC Training The EPO and the USPTO have jointly prepared CPC training material to support users in their learning process of the CPC classification system. Use the links below to access the material. ****///// NEW UPDATED MODULES /////**** Course ...瀏覽：1001
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日期：2026-04-18
Patents have been granted in the United States on methods for doing business since the US patent system was established in 1790. The first financial patent was granted on March 19, 1799, to Jacob Perkins of Massachusetts for an invention for "Detecting .....
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日期：2026-04-24
5 Feb 2015 ... The Cooperative Patent Classification (CPC) effort is a joint partnership between
the United States ......
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日期：2026-04-19
1 Dec 2012 ... U.S. patents receive a mandatory classification for all claimed disclosure, that is,
the claims are read in ......
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日期：2026-04-22
10 Jul 2012 ... Class Numbers & Titles | Class ... Class
Schedule (HTML)...
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日期：2026-04-20
The United States Patent Classification is an official patent classification system
used and maintained by the United ......
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日期：2026-04-21
The United States Patent Classification (USPC) is fixed by the United States
Patent and Trademark Office (USPTO)....
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日期：2026-04-18
U.S. Patent Application Master Classification File (MCF). The U.S. Patent
Application Master Classification File contains ......
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