It's not a complete list, but here are the interesting ones for us Carawagon buffs

Roof
Seats
Water Heating
Here's an index of his patents - he had interests ranging from bicycles to Gyrating Piston Machines (oooerr!) and even a toll charging system (boo!).
Full list (possibly) HERE
Oh, and just a reminder, the rights to Carawagon and probably these patents are now owned by the company which also owns the rights to Dormobile, so be careful what you copy

Enjoy
