MEIOSIS IN THE SPERM CELLS OF THE GRASSHOPPER, PSOPHUS STRIDULUS L

croscopic film on growth cleavage. Explains the double cycles of cell-division in plants or animals, and shows living cells growing through prophase, metaphase, anaphase, and telophase of both cycles of division, Credits: Author, Carl Zeiss; commentary, Arthur T. Brice; collaborator, Robert L. Bacon

Registration MP461 No renewal found

Term began: 1950-08-09
Claimant: Attorney General of the United States
Class: MP — published motion picture other than a photoplay (numbering series begun Jan. 1950)
Finding: no renewal entry found for 1977-1979 in the CCE motion-picture renewal sections or in the Copyright Office renewal records 1978-2025
In the public domain since: 1 January 1979 (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 1977 or 1978 volume; volumes searched: 1977, 1978, 1979.

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 MP461.

Catalog entry

Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1950, Internet Archive catalogofcopyri341213libr (OCR text), lines 39318–39330.

Summary: A microscopic film on growth 
cleavage. Explains the double cycles of 
cell-division in plants or animals, and 
shows living cells growing through pro- 
phase, metaphase, anaphase, and telophase 
of both cycles of division, 

Credits: Author, Carl Zeiss; commentary, 
Arthur T. Brice; collaborator, Robert L. 
Bacon. 

© Attorney General of the United States; 
9Aug50; MP461,

Copies on the Internet Archive

Not searched yet.

Search the Internet Archive yourself · JSON