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An Entity of Type : prov:Entity, within Data Space : webisadb.webdatacommons.org associated with source dataset(s)

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prov:value
  • A lighting system for a welders helmet which includes a high intensity, high Kelvin temperature electric light source attached to the face shield for directing a high energy, high Kelvin temperature light beam forwardly of the viewing port, and an energizing circuit including an on-off switch interconnecting the light source to a source of electrical energy which deenergizes the light source where
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