A SILENT GUARDIAN
ULTRA VIOLET RAY HARMLESS AND INVISIBLE (Received Feb. 15, 2 p.m.) NEW YORK, Feb. 14. The Westinghouse Electric Go. has displayed the newest invention, an ultra-violet, ray, harmless and invisible, which will protect vaults or harbors in war-time. Jewellers can place, rays at various angles in a strongroom so that an intruder interrupting it will east, an unseen shadow, which will ring an alarm or release a tear gas barrage.
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Bibliographic details
Poverty Bay Herald, Volume LV, Issue 17185, 15 February 1930, Page 6
Word Count
73A SILENT GUARDIAN Poverty Bay Herald, Volume LV, Issue 17185, 15 February 1930, Page 6
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