ଛାଞ୍ଚ:PD-in-Iran
This work is in the public domain in its home country of Iran where it was first published. It is additionally free in the United States, where Iranian copyright is not recognised, according to Circ. 38a of the US Copyright Office.
In the case of a private work, this indicates the author died at least 30 years ago - and in the case or corporate works, that it was first published at least 30 years ago.