The Wheel
Back in 2001, an Australier names John Micheal Keogh, patented the wheel.
Nobody knows why, or how he got it approved... but he did it: He patented the "Circular transportatim facilitation device"!
It can be found under application number "AU 2001100012 A4", check out the entire patent at:
http://www.ipmenu.com/archive/AUI_2001100012.pdf
Submitted by: Frank van Boven