LES MACHINES ELEMENTAIRES
imple Machines. Summary: Shows the basic features of simple machines—the lever, the inclined plane, the wedge, the pulley, and the screw — and demonstrates their application to modern complex machines. Animated drawings clarify abstract mechanical principles. Credits: Collaborator, H. Horton Sheldon
Registration MP3381 No renewal found
- Term began
- 1948-09-16
- Claimant
- Encyclopaedia Britannica Films, Inc
- Class
- MP — published motion picture other than a photoplay (numbering series begun 1946)
- Finding
- no renewal entry found for 1975-1977 in the CCE motion-picture renewal sections
- In the public domain since
- 1 January 1977 (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 1975 or 1976 volume; volumes searched: 1975, 1976, 1977.
Catalog entry
Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1948, Internet Archive catalogofcopyrig321213lib (OCR text), lines 23572–23581.
of ‘‘Simple Machines. Summary: Shows the basic features of simple machines—the lever, the inclined plane, the wedge, the pulley, and the screw — and demonstrates their application to modern complex machines. Animated drawings clarify abstract mechanical principles. Credits: Collaborator, H. Horton Sheldon. © Encyclopaedia Britannica Films, Inc.; 16Sep48; MP3381.
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