%0 Journal Article
%A Hashemi, Shima sadat
%T  A Study about Registration Level of Patent Offices in European Union, U.S.A and Iran 
%J  Roshd -e- Fanavari
%V 3
%N 12
%P 1-10
%D 2007
%R 
%U https://rimag.ir/fa/Article/20234