Convention signed at Washington October 8, 1974;
Ratification advised by the Senate of the United States of America November 18, 1975;
Ratified by the President of the United States of America December 15, 1975;
Ratified by the Polish People's Republic June 10, 1976;
Proclaimed by the President of the United States of America July 23, 1976;
Entered into force July 22, 1976;