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Rh 1883; the Final Protocol annexed to that Act; the Protocol of Madrid, April 15, 1891 relating to the dotation of the international Bureau, and the additional Act of Brussels, December 14, 1900. However, the Acts cited shall remain binding on the countries which shall not have ratified the present Act.

The present Act shall be signed in a single copy, which shall be filed in the archives of the Government of the United States. A certified copy shall be sent by the latter to each of the unionist Governments.

In witness whereof, the respective Plenipotentiaries have signed the present Act.

Done at Washington, in a single copy, the second day of June 1911.