Home1990 Treaties and Agreements ...Oman (90-1201) – Economic and Technical Cooperation Agreement hide Oman (90-1201) – Economic and Technical Cooperation Agreement TIAS Office of Treaty Affairs December 1, 1990 Foreign Assistance: Economic and Technical Cooperation Agreement signed at Muscat December 1, 1990; entered into force December 1, 1990. Download Agreemnt [4 MB] Tags Development Economic Statecraft Oman Technology Treaties Treaties and International Agreements