Making and Selling a Stair-Climbing Dolly
I'm confused as to what he invented. Here's an advert from a year before he even formed the company advertising the exact same product: <a href="https://www.youtube.com/watch?v=0PpNLD3TrdE" rel="nofollow">https://www.youtube.com/watch?v=0PpNLD3TrdE</a>