Originally Posted by Busty2

In the USA

Duration under 1909 Act
Federal standards for copyright duration differ substantially under the 1909 act compared with the 1976 act because
of the renewal term contained in the 1909 act. Under the 1909 act, federal copyright was secured on the date a work was published or, for unpublished works, on the date of registration. A copyright lasted for a first term of 28 years from the date it was secured. The copyright was eligible
for renewal during the final, that is, 28th year, of the first term. If renewed, the copyright was extended for a second, or renewal, term of 28 years.


So if they did renew the © for a further 28 years that design is still protected by the US © laws ( unless the design was registered before 1962)? In 1978 the law was changed and now the std © duration is 70 years after the death of the originator or last surviving originators in the case of two or more designers!