Just took a look at patents with the number 15806,
https://www.google.com/search?hl=en&...rmdo=1&tbm=pts
and I got geo steering assemblies and a basket carrier.
Somerun want to run with this?
Either I or someone else should check the other numbers.
EDIT: Just went back and checked some of the other numbers:
62326 gives us a patent for a safety ladder....stairs anyone?