Abplanalp used plastic in a model that could be mass-produced , lowering the price per valve from 15 cents to 2 1 / 2 cents .
Mr. Abplanalp used plastic in a model that could be mass produced , lowering the price per valve , to 2 1 / 2 cents from 15 cents .
Massachusetts is one of 12 states without the death penalty , having abolished it in 1984 .