PRESTRESSED CONCRETE
ek Cou.; 15Jun49; JP5686. PRESTRESSED CONCRETE. Gustave A. Magnel. © 1949. 1 reel, sd., b&w, 16mm. Summary: Presents a review of the use of concrete, explains the method of prestressing developed by Messrs. Blaton and Magnel, and shows the construction of recent structures using prestressed concrete
Registration MU4331 No renewal found
- Term began
- 1949-07-15
- Claimant
- Gustave A. Magnel
- Class
- MU — unpublished motion picture other than a photoplay (numbering series begun 1946)
- Finding
- no renewal entry found for 1976-1978 in the CCE motion-picture renewal sections or in the Copyright Office renewal records 1978-2025
- In the public domain since
- 1 January 1978 (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 1976 or 1977 volume; volumes searched: 1976, 1977, 1978.
Catalog entry
Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1949, Internet Archive catalogofcopyri331213libr (OCR text), lines 34496–34511.
E. Budek Cou.; 15Jun49; JP5686. PRESTRESSED CONCRETE. Gustave A. Magnel. © 1949. 1 reel, sd., b&w, 16mm. Summary: Presents a review of the use of concrete, explains the method of prestressing developed by Messrs. Blaton and Magnel, and shows the con- struction of recent structures using pre- stressed concrete. © Gustave A. Magnel; title, descr., & 4 prints, 15Jul49; MU4331.
Copies on the Internet Archive
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