"While driving through an automatic carwash in 1971, George Ballas watched the whirling nylon bristles glide around the contour of his vehicle and wondered if he could adapt the technology to remove the weeds around trees in his yard.
At home, he punched holes in a tin can, threaded it with wire and fishing line and bolted it to a rotating lawn edger. He called it the Weed Eater, and when he couldn’t sell the concept, he founded his own company and built it into a $40-million-a-year business."
https://www.latimes.com/local/obitua...703-story.html
As a teen I wanted to invent something to do leaf cleanups by doing modifications to a snowblower like a rake thatcher thing in front.
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