安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- 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
- Search for patents | USPTO
Find existing patents, published patent applications, and other published patent documentation
- U. S. Patent, Patent Application and Patent Search - Justia Patents Search
Browse Patents by U S Classification Apparel (Class 2) Baths, closets, sinks, and spittoons (Class 4) Beds (Class 5) Compound tools (Class 7) Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers (Class 8) Boot and shoe making (Class 12) Bridges (Class 14) Brushing, scrubbing, and general cleaning (Class 15)
- Patents - WIPO
Interested in how patents can be used to protect inventions? Discover all you need to know about patents at the international level
- Patents | USPTO
Patent basics Patent process step-by-step Search patents Identify if you have a patent Frequently asked questions (FAQs) Procedures (MPEP) and guidance
- Google Patents Advanced Search
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
- Patent Public Search | USPTO
The Patent Public Search tool is a web-based search application for patents and patent application publications Patent Public Search has two user-selectable modern interfaces that provide enhanced access to prior art
- United States Patent and Trademark Office
Home page of the United States Patent and Trademark Office's main web site
|
|
|