发明专利网站目录
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发明专利网站目录
Intellectual Property Office
Intellectual Property Office The Intellectual Property Office website is currently experiencing difficulties.We are working to rectify the situation and hope to be back online soon... www.ipo.gov.uk
- 2015-04-29 - 收藏United States Patent and Trademark Office
United States Patent and Trademark Office Enforcing your trademark rights/trademark litigation Transferring ownership More Trademarks Back Trademark Updates and Announcements Back Trademark Updates an... www.uspto.gov
- 2015-04-29 - 收藏