1.
FreePatents Online
Provides fast, easy-to-use access in PDF format to millions of patents from 1974 to the present.
2. Guide to Searching for Patents on Long Island
A step-by-step tutorial on using local resources to perform a patent search. The best place to begin your patent or trademark search.
3. U.S. Patent and Trademark Office
The official web site of the U.S. Patent and Trademark Office. General information about patents and trademarks, how to apply for patents and trademarks, search patents and trademarks.
4. U.S. Patent Office Web Patent Databases
Full text database contains full text and images of patents from 1790-date. Patents before 1976 are searchable by current classification or by patent number only.
