CountryActionAction DateEffective Date
BULGARIAAdherence21/08/1972
CANADASignature13/12/1965
CANADARatification01/04/1966
CUBAAdherence28/11/1975
DENMARKSignature01/12/1965
DENMARKRatification14/08/1968
FRANCESignature13/12/1965
FRANCEApproval15/02/1967
GERMAN DEMOCRATIC REPUBLICAdherence21/05/1974
GERMAN DEMOCRATIC REPUBLICStatement21/05/1974
GERMANY FEDERAL REPUBLICSignature08/12/1965
GERMANY FEDERAL REPUBLICRatification29/05/1969
GERMANY FEDERAL REPUBLICDeclaration29/05/1969
ITALYSignature13/12/1965
ITALYRatification19/12/1969
JAPANAccession01/07/1970
Land BerlinExtension29/05/1969
NORWAYSignature13/12/1965
NORWAYRatification09/03/1967
POLANDSignature13/12/1965
POLANDRatification07/01/1969
PORTUGALSignature13/12/1965
PORTUGALRatification19/12/1969
ROMANIAAccession21/03/1967
SOVIET UNIONSignature02/12/1965
SOVIET UNIONRatification23/10/1967
SPAINSignature08/12/1965
SPAINRatification29/03/1967
UNITED KINGDOMSignature08/12/1965
UNITED KINGDOMRatification15/08/1966
UNITED STATES OF AMERICASignature02/12/1965
UNITED STATES OF AMERICARatification16/08/1966