408 X 1

The film '408 X 1' is a short documentary/industrial film produced in 1952 by International Harvester. It focuses on the manufacturing processes and testing of trucks at their Fort Wayne facility. Under the 1909 Copyright Act, works published in the United States between 1928 and 1963 required a copyright renewal filing during the 28th year of their initial term to maintain protection. For a 1952 release, the renewal window was 1979–1980. A search of the Stanford Copyright Renewal Database and the Library of Congress Catalog of Copyright Entries (CCE) reveals no renewal registration for this title. Industrial films of this nature from the 1950s were rarely renewed unless they had significant theatrical or television distribution potential. Additionally, the film is widely distributed today as part of the public domain Prelinger Archives and is held by several institutions (including the Library of Congress and Internet Archive) as a public domain work. Because the registration was not renewed in the 28th year, the work entered the public domain on January 1, 1981.