Sea are all aligned (full moon and new moon), the combined effect results in the high "spring tides". In contrast, when the Sun is at 90° from the Moon as viewed from Earth, the combined gravitational effect on tides is less causing the lower "neap tides". Tidal flows of seawater are resisted by the water's inertia and can be affected by land masses. In places like the Gulf of Mexico where land constrains the movement of the bulges, only one set of tides may occur each day. Inshore from an island there may be a complex daily cycle with four high
European Convention relating to the Formalities required for Patent Applications European Convention relating to the Formalities required for Patent Applications The European Convention relating to the formalities required for patent applications was signed at Paris on December 11, 1953. Its aim was to "simplify and unify, as far as it is possible, the formalities required by the various national legislations for patent applications". It was open to the signature of the members of the Council of Europe, came into force on June 1, 1955, and, after it came into force, became open to accession by all States which are members of the International Union for the Protection of Industrial Property.