OK, so we all 'know' who invented the vacuum cleaner - Hoover. Except that he didn't - he bought the idea from Spangler. But Hoover brought the vacuum cleaner to the world as a commercial product.
AFAIK Bosch invented the jigsaw, Skil invented the circular saw, Kango invented the demolition hammer.
But is that right? And who 'invented' the router, the SDS drill, the cordless drill driver, the angle grinder?
Interesting topic what?