Review for PatentlyUseful(tm) Patent Number Search Engine by Patent Attorney
Rated 5 out of 5 stars
Fantastic search engine for anyone working with patents- fastest way to pull up the text of a patent. If you set the keyword (under "Manage Search Engines...", you can find patent 7123456 by going to the location bar (or typing Ctrl-L) and typing "p 7123456" and hitting enter.
To create your own collections, you must have a Mozilla Add-ons account.