GRAVITY
GRAVITY. Coronet, 1950. 11 min., sd., b&w, 16mm. Summary: Explains Newton's Law of Universal Gravitation and shows how the force of gravity depends on the masses involved and the distance between them. For intermediate and junior high school grades. Credits: Educational collaborator, Ira C. Davis
Registration MP191 No renewal found
- Term began
- 1950-01-30
- Claimant
- David A. Smart
- Class
- MP — published motion picture other than a photoplay (numbering series begun Jan. 1950)
- Finding
- no renewal entry found for 1977-1979 in the CCE motion-picture renewal sections or in the Copyright Office renewal records 1978-2025
- In the public domain since
- 1 January 1979 (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 1977 or 1978 volume; volumes searched: 1977, 1978, 1979.
Catalog entry
Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1950, Internet Archive catalogofcopyri341213libr (OCR text), lines 6891–6904.
GRAVITY. Coronet, 1950. 11 min., sd., b&w, 16mm. Summary: Explains Newton's Law of Universal Gravitation and shows how the force of gravity depends on the masses involved and the distance between them. For intermediate and junior high school grades. Credits: Educational collaborator, Ira C. Davis. © David A. Smart; 30Jan50; MP191.
Copies on the Internet Archive
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