International patent classification 1974
Joint ad hoc Committee of the Council of Europe and the World Intellectual Property Organization on the International Classification of Patents.
London Morgan-Grampian for the World Intellectual Property Organization
1974
'Until the entry into force of the Strasbourg Agreement, the further development of the Int. Cl. is ensured by the Joint ad hoc Committee of the Council of Europe and the World Intellectual Property Organization (WIPO) on the International Classification of Patents' - Foreword
Previous ed.: published as 'International classification of patents for invention ...' 1969
Patents