A method of weaving is covered by the group designating the fabric woven unless the method is characterised by the operation of a particular loom rather than by the production of a particular fabric. In this case, the method is covered by the group for the loom.
For the purpose of classification of inventions, if there is any doubt as to which of the essential features of an invention is the most important (this is usually the most restrictive feature) the groups of this sub-class designating woven fabrics should be considered in the order in which they appear at each level of indentation, except that groups designating woven pile fabrics are to be considered as taking precedence over groups designating other woven fabrics.