Rectangular holes in twelve-row punched cards
United States · 1967
An American National Standard implies a consensus of those sub¬ stantially concerned with its scope and provisions.An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public.The existence of an American National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard.American National Standards are subject to periodic review and users are cautioned to obtain the latest editions.