U.S. Patent and Trademark Office
A few summers ago I was digging (as I often do) for rocks in my grandmother's backyard. Somehow I came across a small, heavy glass piece. It has a date printed on it and it says "PATENT JANY 11TH 1868." Do you know where I can find patent information online?
Stop by the U.S. Patent and Trademark Office site, which has a searchable database and contact information. Best of luck!