The reference in subsection 73(2) to construction of a
building by, or with the licence of, the owner of the copyright in
architectural drawings or plans shall be read as including a reference to
construction by, or with the licence of, the person who, at the time of the
construction, was the owner of the copyright in the drawings or plans under
the law relating to copyright that was in force at that time in the State or
Territory in which the building was constructed.