Duration of Copyright:

In simplest terms, for works created in the U.S.A. now:

• for a single author, copyright lasts for the remaining life of the author plus 50 more years;

• for an organization, copyright lasts for 75 years from the date of publication, or 100 years from the date of creation, whichever occurs first.

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Copyright © April, 1997, by Carol Scheftic (based on original work at The Geometry Center and used with permission). All rights reserved.
Please send comments on this page, or requests for permission to re-use material from this page, to: scheftic@geom.umn.edu