Each subject grouping in USPTO's scheme includes a major component called a class and a minor one called a subclass.

每一个集成于usptos体制中的主题包含了被称为集的一个主要的成分和被称为副集一个稍小的成分。

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What started out as a gimmick to entertain fans during breaks in the action has become an ultra-important component for major- and minor-league sports teams looking to market at the grass roots by nabbing new fans at increasingly earlier ages.

FORBES: America's Top Sports Mascots