@article{20775, recid = {20775}, title = {International Patent Classification : General information [Text in Arabic].}, pages = {20 pages ;}, note = {Introduction; -- Structure of the IPC; -- The IPC Agreement of 1971; -- IPC publications and machine-readable products; Principles underlying the system; -- Use of the IPC for classifying the patent documents of various countries; -- Use of the IPC for the retrieval of patent documents; -- Assistance in classification of search files according to the IPC; -- Training in the use of the IPC;.}, url = {http://tind.wipo.int/record/20775}, }