Show TIm The first nitrogen filled tungsten 1 lamps to be ho u used ed for fol ornamental street lighting 3 are re now new In hi opera operation Hon in Seattle and hate attracted d much attention by rca reason n oCth of oC th their lr great brilliancy and x pure Oure uro white color The The- new nitrogen ten filled ClUed tungsten n lamps are the first tint to be made commercially commercially commer commer- available and will replace the old typo type of at lun tungsten lamps now In service on the principal streets of ot Seattle Electrical Electrical World |