. "Edwin Holmes (April 25, 1820 \u2013 1901) was an American businessman who is credited with commercializing the electromagnetic burglar alarm and with establishing the first burglar alarm networks."@en . "1820Z"^^ . . . "1901Z"^^ . "Edwin Holmes"@en . "1820-04-25Z"^^ . "american inventor" . "Holmes, Edwin"@en . . .