"Larry Stevenson"@en . . "2012-03-25Z"^^ . . "Larry Stevenson"@en . "Stevenson, Richard Lawrence"@en . "1930Z"^^ . . "American inventor" . . "1930-12-22Z"^^ . "Richard Lawrence \"Larry\" Stevenson (December 22, 1930 \u2013 March 25, 2012) was the inventor of the kicktail, the bent-upwards end of a skateboard, which made most of today's skateboarding tricks possible and essentially revolutionized the sport."@en . "Richard Lawrence Stevenson"@en . "2012Z"^^ .