ATOMENERGIE
gy release--natural radioactivity, nuclear synthesis, and nuclear fission; and illustrates the relationship between atomic energy from the sun and chemical energy stored and released in photosynthesis and combustion. For high school, college, and adult groups. Credits: Collaborator, Willard F. Libby
Registration MP4618 No renewal found
- Term began
- 1949-08-25
- Claimant
- Encyclopaedia Britannica Films, Inc
- Class
- MP — published motion picture other than a photoplay (numbering series begun 1946)
- Finding
- no renewal entry found for 1976-1978 in the CCE motion-picture renewal sections or in the Copyright Office renewal records 1978-2025
- In the public domain since
- 1 January 1978 (end of the 28th year, no renewal)
A renewal would have appeared in the Copyright Office's renewal registrations 27 to 29 years after the term began. Those volumes are loaded and no matching renewal was found. A work published 1931–1963 that was not renewed entered the public domain at the end of its 28th year.
A renewal had to be filed in the 28th year and would be listed in the 1976 or 1977 volume; volumes searched: 1976, 1977, 1978.
Catalog entry
Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1949, Internet Archive catalogofcopyri331213libr (OCR text), lines 24048–24060.
three known forms of atomic energy re- lease--natural radioactivity, nuclear synthesis, and nuclear fission; and il- lustrates the relationship between atomic energy from the sun and chemical energy stored and released in photosynthesis and combustion. For high school, college, and adult groups. Credits: Collaborator, Willard F. Libby. © Encyclopaedia Britannica Films, Inc. ; 25Aug49; MP4618.
Copies on the Internet Archive
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