INDUCTANCE AND CAPICITANCE

INDUCTANCE AND CAPICITANCE. (Radio Electronics. Reel lesson 5) De Forest's Training, Inc., 1948. 100 feet, b&w, 16mm. Summary: A study of inductance and capicitance—what these circuit conditions are and how they influence the current

Registration MP3898 No renewal found

Term began: 1948-10-01
Claimant: De Forest's Training, 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.

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 MP3898.

Catalog entry

Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1949, Internet Archive catalogofcopyri331213libr (OCR text), lines 5897–5907.

INDUCTANCE AND CAPICITANCE. 
(Radio Electronics. Reel lesson 5) 
De Forest's Training, Inc., 1948. 
100 feet, b&w, 16mm. 

Summary: A study of inductance and 
capicitance—what these circuit conditions 
are and how they influence the current. 

© De Forest's Training, Inc.; 10ct48; 
MP 3898.

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