HOW TO KNOW NAMES OF NUMBERS AND NUMBER SYMBOLS
HOW TO KNOW NAMES OF NUMBERS AND NUMBER SYMBOLS. Denzil Thomas Hill. ©1951. 1 reel, sd., b&w, 8mm. Summary: A teaching device which helps to develop a mental iaige of a number az symbol by showing the symbol, pronouncing the name of the symbol, and illustrating the meaning of the symbol
Registration MU5351 No renewal found
- Term began
- 1951-10-23
- Claimant
- Denzil Thomas Hill
- Class
- MU — unpublished motion picture other than a photoplay (numbering series begun 1946)
- Finding
- no renewal entry found for 1978-1980 or in the Copyright Office renewal records 1978-2025
- In the public domain since
- 1 January 1980 (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 1978 or 1979 volume; volumes searched: 1978, 1979, 1980.
Catalog entry
Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1951, Internet Archive catalogofcopyri351213libr (OCR text), lines 36375–36387.
HOW TO KNOW NAMES OF NUMBERS AND NUMBER SYMBOLS. Denzil Thomas Hill. ©1951. 1 reel, sd., b&w, 8mm. Summary: A teaching device which helps to develop a mental iaige of a number az symbol by showing the symbol, pronouncing the name of the symbol, and illustrating the meaning of the symbol, © Denzil Thomas Hill; 230ct51; MU5351.
Copies on the Internet Archive
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