MAGNETIC FORCE

T FOOD (Filmstrip) International Minerals & Chemical Corp. Made by Empire Photosound. 69 fr., color, 35 mm. © International Minerals & Chemical Corp. & Empire Photosound, Inc.; 14Dec60; JU9987. MAGNETIC FIELDS. SEE MAGNETS. MAGNETIC FORCE. U.S. National Academy of Sciences. 27 min., sd., color, 16mm

Registration MP10981 No renewal found

Term began: 1960-11-01
Claimant: U. S. National Academy of Sciences
Class: MP — published motion picture other than a photoplay (numbering series begun Jan. 1950)
Finding: no renewal entry found for 1987-1989 or in the Copyright Office renewal records 1978-2025
In the public domain since: 1 January 1989 (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 1987 or 1988 volume; volumes searched: 1987, 1988, 1989.

The renewal sections are OCR text of printed volumes; a damaged record can hide a renewal. Before relying on this, search the linked volumes yourself for the title and for number MP10981.

Catalog entry

Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1961, Internet Archive catalogofcopyr3151213libr (OCR text), lines 13684–13698.

MAGNESIUM - MAJOR PLANT FOOD (Filmstrip) 
International Minerals & Chemical Corp. 
Made by Empire Photosound. 69 fr., 
color, 35 mm. © International Minerals 
& Chemical Corp. & Empire Photosound, 
Inc.; 14Dec60; JU9987. 


MAGNETIC FIELDS. SEE MAGNETS. 


MAGNETIC FORCE. U.S. National Academy 
of Sciences. 27 min., sd., color, 
16mm. ©U. S. National Academy of 
Sciences; 1Nov60; MP10981.

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