2020 - Volume #44, Issue #6, Page #22
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He Tracked Down The Story Of The “Square Wheel” Inventor
An Iowa farm boy invented and patented one of the most unusual ideas in agricultural history. Royal Riblet and his brother Merwin conceived and built a highly complex square track mechanism in 1915 that they said could provide greatly improved traction for round wheels. More than a century later, retired engineer Char..........


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2020 - Volume #44, Issue #6