SIMPLE MACHINES, AND THEIR APPLICATIONS

Simple machines, and their applications.

Registration MP14204 Uncertain

Term began: 1941-12-29
Claimant: Erpi classroom films, inc.
Class: MP — published motion picture other than a photoplay (numbering series begun Sept. 1928)
Finding: registration number MP14204 does not fit the numbering of 1941; the catalog date or number is likely misprinted

The catalog entry has a problem (missing date, or a number that does not fit its year), so the renewal check cannot be relied on.

Catalog of Copyright Entries, New Series, Part 1 Group 3: Dramatic Compositions, Motion Pictures, 1943, Internet Archive catalogofcopyrig161libr (OCR text), lines 31841–31843.

Simple machines, and their applications. © Dec. 
29, 1941; M 14204; Erpi classroom films, inc., 
New York. 5485

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