[US Patent & Trademark Office, Patent Full Text and Image Database]
[Home] [Quick Search] [Advanced Search] [Patent Number Search] [Help]
[View Shopping Cart]

Data current through September 1, 2015..

Query [Help]

in
in
[Help]
                                    

Patents from 1790 through 1975 are searchable only by Issue Date, Patent Number, and Current US Classification.
When searching for specific numbers in the Patent Number field, patent numbers must be seven characters in length, excluding commas, which are optional.