| ثبت اختراع: | |
| ۱٫ P.Payvandy, M.Latifi, “Interlacing and Twisting Metallic Filaments by Rotational Permanent Magnetic Field System”, Iran Patent#52824,2008,Iran | |
| ۲٫ P.Payvandy,M.Latifi,” Interlacing and Twisting Metallic Filaments by Rotational Magnetic Field System”, Iran Patent#52826,2008,Iran | |