A first patent relating to a bar code was issued to J.T. Kermode in 1934. It used four bar to sort billing areas for the Cleveland Gas $ Electric Co. The bar code industry was begun in 1960s as small working groups in large companies. 여기서 문법적으로 수정할 부분이 large 밖에 없나요?? 다른데는 아무리 봐도 모르겠네요.