CountryActionAction DateEffective Date
AustraliaSignature28/06/1919
AustraliaRatification10/01/1920
CanadaSignature28/06/1919
CanadaRatification10/01/1920
FRANCESignature28/06/1919
FRANCERatification10/01/1920
IndiaSignature28/06/1919
IndiaRatification10/01/1920
ITALYSignature28/06/1919
ITALYRatification10/01/1920
JAPANSignature28/01/1919
JAPANRatification10/01/1920
New ZealandSignature28/06/1919
New ZealandRatification10/01/1920
POLANDSignature28/06/1919
POLANDRatification10/01/1920
South AfricaSignature28/06/1919
South AfricaRatification10/01/1920
UNITED KINGDOMSignature28/06/1919
UNITED KINGDOMRatification10/01/1920
UNITED STATES OF AMERICASignature28/06/1919
UNITED STATES OF AMERICARatification10/01/1920