History Bug zapper
early model prototype fly zapper circa 1911, conceded expensive practical in october 1911 issue, popular mechanics magazine had piece showing model fly trap used elements of modern bug zapper, including electric light , electrified grid. design implemented 2 unnamed denver men , conceded expensive of practical use. device 10 15 inches (25 38 cm), contained 5 incandescent light bulbs, , grid ⁄16-inch (1.59 mm) wires spaced ⁄8-inch (3.17 mm) apart voltage of 450 volts. users supposed bait interior meat. according patent , trademark office, first bug zapper patented in 1932 william m. frost; separately, dr. william brodbeck herms (1876–1949), professor of parasitology @ university of california, had been working on large commercial insect traps on 20 years protection of california s important fruit industry. in 1934 introduced electronic insect killer became model future bug zappers.