PLANT GROWTH AND MUTATION IN TRADESCANTIA VIRGINICA L
Shows the formation of a mutation, a colchicine solution having been used to prevent the last two phases of cell growth from taking place. PLANT GROWTH AND MUTATION IN TRADESCANTIA VIRGINICA L (SPIDER- WORT) Cont'd. Credits: Commentary, Arthur T. Brice, Elizabeth McClintock; photography, S. Strugger
Registration MP2945 No renewal found
- Term began
- 1952-10-01
- Claimant
- Arthur T. Brice
- Class
- MP — published motion picture other than a photoplay (numbering series begun Jan. 1950)
- Finding
- no renewal entry found for 1979-1981 or in the Copyright Office renewal records 1978-2025
- In the public domain since
- 1 January 1981 (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 1979 or 1980 volume; volumes searched: 1979, 1980, 1981.
Catalog entry
Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1952, Internet Archive catalogofcopyrig361213lib (OCR text), lines 48149–48166.
filaments of the spiderwort. Shows the formation of a mutation, a colchicine solu- tion having been used to prevent the last two phases of cell growth from taking place. 124 PLANT GROWTH AND MUTATION IN TRADESCANTIA VIRGINICA L (SPIDER- WORT) Cont'd. Credits: Commentary, Arthur T. Brice, Elizabeth McClintock; photography, S. Strug- ger. © Arthur T. Brice; 1Oct52; MP2945.
Copies on the Internet Archive
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