United States Patent number 1
google.com
google.com
More info on the "first" US Patent. http://www.uspto.gov/news/pr/2001/01-33.jsp
I'm genuinely curious what the reasoning is.
http://www.google.com/patents?id=nrxzAAAAEBAJ
That's General Washington's signature in the middle, and Edmund Randolph's (first Attorney General) on the bottom.
The cabinet was the PTO in 1790.
After all, the 'rack and pinion' had been around for a while and the rack really is just a gear rolled out.