"1854Z"^^ . "Edwin Ruud"@en . "1932-12-09Z"^^ . "1854-06-09Z"^^ . "Norwegian mechanical engineer" . "1932Z"^^ . "Edwin Ruud (1854\u20131932) was a Norwegian mechanical engineer and inventor who immigrated to the United States where he designed, sold, and popularized the tankless-water heater."@en . . . . . . "Ruud, Edwin"@en .