497. When analogous user arises.

A presumption of analogous user is strong where two methods have been employed in the manufacture of particular articles or in particular trades, and only one of those methods has been employed in the manufacture of different articles or in different trades, and an application is made for a patent for the use of the other method in the manufacture of the last-mentioned articles or in the last-mentioned trades1. The same applies where self-contained units of machinery, or processes fulfilling a function complete in itself, are sought to be transferred from one trade to another or to a different