"2002-12-01Z"^^ . "Cassius Chapin Cutler (December 16, 1914 \u2013 December 1, 2002) was an American electrical engineer at Bell Labs. His notable achievements include the invention of the corrugated waveguide and differential pulse-code modulation (DPCM)."@en . "American electrical engineer" . . . . "Cutler, C. Chapin"@en . "2002Z"^^ . "1914-12-16Z"^^ . "1914Z"^^ . . "Cassius Chapin Cutler"@en . .