Dumbwaiter Oven Not So Dumb

Hello? High-end real estate developer? Yes, you there lurking on RentedSpaces to see what amenities real people, and real renters want... here's a hot tip.

Actually, a 360 degree hot tip: the newly designed "dumbwaiter oven." It works like a regular oven with one nifty exception: Instead of the door folding out in all manner of disarray and wasted space, the bottom of this oven works like a trap door and lowers the food to you.

Guess which Founding Father is credited with the original idea?