"Patel, C. Kumar N."@en . "1938Z"^^ . . . . "American electrical engineer" . "Chandra Kumar Naranbhai Patel (born 2 July 1938) is an electrical engineer. He developed the carbon dioxide laser in 1963; it is now widely used in industry for cutting and welding, as a laser scalpel in surgery, and in laser skin resurfacing."@en . . . . "1938-07-02Z"^^ . . . . . . "C. Kumar N. Patel"@en .