The international treaty that became known as the "London Protocol" was the revision of the earlier protocol, which had been ratified on August 2, 1850, by the major Germanic powers of Austria and Prussia.
Rahvusvaheline leping, mis sai tuntuks kui "Londoni protokoll", oli varasema protokolli ülevaatus, mis ratifitseeriti 2. augustil 1850 suurte Saksa riikide Austria ja Preisimaa poolt.