4, PRINCIPLES OF GAS-FILLED TUBES
=i 4, PRINCIPLES OF GAS-FILLED TUBES.
Registration MP468 No renewal found
- Term began
- 1945-06-01
- Claimant
- 2c 4-19-46, synopsis
- 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 MP468.
Catalog entry
Catalog of Copyright Entries, New Series, Part 1 Group 3: Dramatic Compositions, Motion Pictures, 1946, Internet Archive catalogofcopyrig191libr (OCR text), lines 70781–70788.
=i 4, PRINCIPLES OF GAS-FILLED TUBES. © 6-1-45; 2c 4-19-46, synopsis; M 468. ENGINEERING. FUNDAMENTALS OF MECHANICS.
Copies on the Internet Archive
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