Duration of copyright, lifetime of the author plus 70 years, because the “author” of a rental work is often not a real person, in this case the standard duration would be unlimited, which is unconstitutional.  Works published before 1978 do not distinguish under copyright between works produced for hire and works with recognized individual authors. Ownership of a rental work depends on the type of creative work: instead of having a signature block, the agreement often includes a sentence that says something like: “You must have accepted these terms and conditions when you order, accept or pay for goods or equipment provided by us after receiving or learning of these conditions. In determining whether an agent is an employee under the agency`s general customary law, we consider the right of the hiring party to control how and by what means the product is obtained. .