We know what he claimed to invent, but the point is that he didn't actually invent any of those mechanisms. They've been around for decades. At best this is inc

We know what he claimed to invent, but the point is that he didn't actually invent any of those mechanisms. They've been around for decades. At best this is incremental development on existing stairclimber trolleys. https://en.wikipedia.org/wiki/Stairclimber https://en.wikipedia.org/wiki/Stairclimber