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Tippy tanks turn a tire seller into an inventor

People fumbling with tanks led Earl Cogswell to seek a better way. People fumbling with tanks led Earl Cogswell to seek a better way. (Barry Chin/Globe Staff)
By Robert Preer
Globe Correspondent / March 28, 2009

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HANOVER - Earl Cogswell Jr., a former assistant manager for Sullivan Tire, noticed a curious phenomenon three years ago when he started working at his father-in-law's business, Dick's Power Equipment in Hanover. He would refill propane tanks for customers, then load the tanks in their vehicles - and it wasn't easy. (Full article: 445 words)

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