ELECTRICAL MACHINERY

4, SPLIT PHASE MOTOR PRINCIPLES. M 494. 5. REPULSION MOTOR PRINCIPLES. M 491, ELECTRICAL WORK. MOTOR CONTROL. 1 reel each. Produced under the direction of the U. S. Office of Education,

Registration MP95 (part 4: SPLIT PHASE MOTOR PRINCIPLES) No renewal found

Term began: 1945-08-01
Claimant: The Calvin Co.
Class: MP — published motion picture other than a photoplay (numbering series begun 1946)
Finding: no renewal entry found for 1972-1974 in the CCE motion-picture renewal sections
In the public domain since: 1 January 1974 (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 1972 or 1973 volume; volumes searched: 1972, 1973, 1974.

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 MP95.

Catalog entry

Catalog of Copyright Entries, New Series, Part 1 Group 3: Dramatic Compositions, Motion Pictures, 1946, Internet Archive catalogofcopyrig191libr (OCR text), lines 70515–70528.

4, SPLIT PHASE MOTOR PRINCIPLES. M 494. 

5. REPULSION MOTOR PRINCIPLES. M 491, 


ELECTRICAL WORK. MOTOR CONTROL. 
1 reel each. Produced under the direction of the 
U. S. Office of Education, 
© 8-1-45; 2c 1-16-46, synopsis; The Calvin Co., 
author and claimant, Kansas City, Mo. 


. DIRECT CURRENT CONTROLLERS, M 95. 
- ACROSS THE LINE STARTERS. M 96.

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