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- CN101829907A - Dual-drive hydrostatic numerical . . . - Google Patents
The invention discloses a dual-drive hydrostatic numerical control swinging head Because a mode of synchronously driving by using two direct-drive motors and supporting by using a hydrostatic bearing is adopted and a single-sided axial support design is adopted at the same time, the accuracy and the rigidity of the swing head are improved; and the swinging head has the positioning accuracy
- WIPO - Search International and National Patent Collections
This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections This search facility features: flexible search syntax; automatic word stemming and relevance ranking; as well as graphical results
- Espacenet – patent search
Espacenet: free access to millions of patent documents Find out if your invention is unique or if other inventors have filed patent applications that are considered to be prior art
- 中国专利公布公告
可查询数据项，默认为对四种专利进行查询。 2 查询结果同一专利类型默认按照公布公告日（更正专利按照更正文献出版日，解密专利按照解密公告日）降序排列。 一种专利类型查询结果超过10000条则不再排序。 3 查询实例：“衣服”或“2014”，可查询包含“衣服”或“2014”的数据。 （一）发明公布、发明授权（1993年以前为发明审定）、实用新型专利（1993年以前为实用新型专利申请）的著录项目、摘要、摘要附图，其更正的著录项目、摘要、摘要附图（2011年7月27日及之后），及相应的专利单行本（包括更正）。
- Where can I search Chinese patents in English? | epo. org
The English website of the China National Intellectual Property Administration (CNIPA) offers a free search engine for Chinese patent information (Patent Search and Analysis) If you require a more detailed answer, please send us your question using the contact form
- Patent Number Search - PatentBuddy
Patent Buddy offers a free search of patents, inventors and current patent owners You can also search for patent attorneys agents Sign up Today!
- CNIPA ENGLISH - cnipa. gov. cn
Electronic Patent Application China Patent Electronic Application System Patent Search Title Abstract Application Number Inventor(s) Name IPC Applicant(s) Name
- Google Patents
Search and read the full text of patents from around the world with Google Patents, and find prior art in our index of non-patent literature
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