James Knott helped build a better lobster trap. Though the world didn’t beat a path to his door in Northbridge, Mass., Mr. Knott eventually persuaded most manufacturers of lobster traps to use his product—plastic-coated wire mesh—rather than wood to make their devices. Nearly four decades ago, the Harvard-trained entrepreneur paid about $90,000...

Source: Wall Street Journal August 24, 2018 14:26 UTC