ABSTRACT
Inthelatenineteenthcenturythemosteconomicallypowerfulandtechnologically advancedcountriesintheworldwereGreatBritain,theUnitedStates,Franceand Germany.AlthoughtheseandanumberofothercountriesinEuropeandtheAmericas hadpatentlaws,theywerequitedifferentfromeachother.Anditwasgenerallyquite difficultforinventorstosecureeffectivepatentprotectioninforeigncountries.
