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Show DENTIST'S AIR HAMMER 0R0VI FILLINQ IN TEETH (Mlt'AfiM (AIM A dentist Is t-rediled with patenting lha llrat Ikneumsih; hatnnter, now ionst ruction ruc-tion a thief ally In the hands of the rlviter Vuli'unlilng of niller. boon to the automuhllr lira Industry, first as Inti-oilut-ed .y dent Int. sas Ieiii Arthur I. Hlark t Northwesirm university's dental st'huol, whu Is rePiMtnslhte fur Ut maunwtlo haiin-nier haiin-nier rla'tn. The sir hammer ass used to drlv 11 Miis- Into rav Itlea. snd the rutiler vuhanlslng ass euttlo)ed In making mak-ing luls (t-cttk |